/* htmLawed_TESTCASE.txt, 27 August 2013 htmLawed 1.1.17, 11 March 2014 Copyright Santosh Patnaik Dual licensed with LGPL 3 and GPL 2+ A PHP Labware internal utility - http://www.bioinformatics.org/phplabware/internal_utilities/htmLawed */ This file has UTF-8-encoded text with both correct and incorrect/malformed HTML/XHTML code snippets to test htmLawed (test cases/samples). The entire text may also be used as a unit. ************************************************ when viewing this file in a web browser, set the character encoding to Unicode/UTF-8 ************************************************ --------------------- start -------------------- <em>Try different $config and $spec values. Some text even when filtered in will not be displayed in a rendered web-page</em><br /> <h6>Attributes</h6> <strong>Xml:lang:</strong><a lang="en" xml:lang="en"></a>, <a lang="en"></a>, <a xml:lang="en"></a><br /> <strong>Standard, predefined value, or empty attribute:</strong> <input type="text" disabled />, <input type="text" disabled="DISABLED" />, <input type="text" disabled="1" /><br /> <strong>Required:</strong> <img />, <img alt="image" /><br /> <strong>Quote & space variation:</strong> <a id=id1 name=xy>a</a>, <a id='id2' name="xy">a</a>, <a id=' id3 ' name = "n" >a</a><br /> <strong>Invalid:</strong> <a id="id4" src="s">a</a><br /> <strong>Duplicated:</strong> <a id="id5" id="id6">a</a><br /> <strong>Deprecated:</strong> <a id="id7" target="self" name="n">a</a>, <hr noshade="noshade" /><br /> <strong>Casing:</strong> <a HREF=""></a><br /> <strong>Custom:</strong> <img alt="image" my:data="portrait" /><br /> <strong>Data-*:</strong> <a data-xml="x" data-xmnt="x" data-xmlnt="x" data-xmn:t="x" data-xmxm="x">a</a><br /> <strong>Admin-restricted?:</strong> <a href="x" onclick="alert();"></a> <h6>Attribute values</h6> <strong>Duplicate ID value:</strong><a id="id8"></a>, <a id="my_id8"></a>, <a id="id8"></a><br /> (try 'my_' for prefix)<br /> <strong>Double-quotes in value:</strong><a title=ab"c"></a>, <a title="ab"c"></a>, <a title='ab"c'></a><br /> (try filter for CSS expression)<br /> <strong>CSS expression</strong>: <div style="prop:expression();"></div><div style="prop:expression()"></div><div style="prop: expression();"></div><div style="prop : expression()"></div><div style="prop:expression(js);"></div><div style="prop:expression(js;)"></div><div style="prop: expression('js');"></div><div style="prop : expr ession('js':)"></div><div style="prop:expression( 'js@ );"></div><br /> <strong>Other:</strong> <input size="50" class="my" value="an input an input an input" />, <input size="5" class="your" value="an input" /><br /> (try 'maxlen', 'maxval', etc., for 'input' in '$spec') <h6>Blockquotes</h6> <blockquote>abc</blockquote><br /> <blockquote>abc<div>def</div></blockquote><br /> <blockquote><div>abc</div>def</blockquote><br /> <blockquote>abc<div>def</div>ghi</blockquote><br /> abc<div>def</div>ghi<br /> <blockquote>QQQ<div>x</div><!-- comment --></blockquote><br /> <blockquote><div>x</div><!-- comment -->QQQ</blockquote><br /> <blockquote><!-- comment --><div>x</div>QQQ<div>x</div></blockquote><br /> <blockquote><div>x<!-- comment --></div>QQQ</blockquote><p>x</p><br /> <br /> (try with blockquote parent) <h6>CDATA sections</h6> <strong>Special characters inside:</strong> <![CDATA[ ]]> ]]>, <![CDATA[ 3 < 4 > 3.5, & 4 > 4 ]]><br /> <strong>Normal:</strong> <![CDATA[ check ]]>, <em>CDATA follows:<![CDATA[ check ]]></em><br /> <strong>Malformed:</strong> <![cdata check ]]>, < ![CDATA check ]]>, <![CDATA check ]]>, < ![CDATA check ] ]><br /> <strong>Invalid:</strong> <em <![CDATA[ check ]]>>CDATA in tag content</em>, <table><![CDATA[ check ]]><tr><td>text not allowed</td></tr></table> <h6>Complex-1: deprecated elements</h6> <center> The PHP <s>software</s> script used for this <strike>web-page</strike> webpage is <font style="font-weight: bold " face=arial size='+3' color = "red ">htmLawedTest.php</font>, from <u style= 'color:green'>PHP Labware</u>. </center> <h6>Complex-2: deprecated attributes</h6> <img src="s" alt="a" name="n" /><img src="s" alt="a" id="id9" name="n" /> <br clear="left" /> <hr noshade size="1" /> <img name="id10" src="s" align="left" alt="image" hspace="10" vspace="10" width="10em" height="20" border="1" style="padding:5px;" /> <table width="50em" align="center" bgcolor="red"> <tr> <td width="20%"> <div align="center"> <h3 align="right">Section</h3> <p align="right">Para</p> <ol type="a" start="e"><li value="x"><a name="x">First</a> <a name="x" id="id11">item</a></li></ol> </div> </td> <td width="*"> <ol type="1"><li>First item</li></ol> </td> </tr> </table> <br clear="all" /> <h6>Complex-3: embed, object, area</h6> <object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/ls7gi1VwdIQ"></param><embed src="http://www.youtube.com/v/ls7gi1VwdIQ" type="application/x-shockwave-flash" width="425" height="350"></embed></object><br /> <embed src="http://www.youtube.com/v/ls7gi1VwdIQ" type="application/x-shockwave-flash" width="425" height="350"></embed><br /> <object data="1.gif" type="image/gif" usemap="#map1"><map name="map1"> <p>navigate the site: <a href="1" shape="REct" coOrds="0,0,118,28">1</a> | <a href="3" shape="circle" coords="184,200,60">3</a> | <a href="4" shape="poly" coords="276,0,276,28,100,200,50,50,276,0">4</a></p> <area href="5" shape="Rect" coords="0,0,118,28"> </map></object> <param name="name">value</param> <object id="obj1"> <param name="param1"> <object id="obj2"> <param name="param2"> </object> </object> <h6>Complex-4: nested and other tables</h6> <table border="1" bgcolor="red"> <tr> <td> Cell </td> <td colspan="2" rowspan="2"> <table border="1" bgcolor="green"> <tr> <td> Cell </td> <td colspan="2" rowspan="2"> </td> </tr> <tr> <td> Cell </td> </tr> <tr> <td> Cell </td> <td> Cell </td> <td> Cell </td> </tr> </table> </td> </tr> <tr> <td> Cell </td> </tr> <tr> <td> Cell </td> <td> Cell </td> <td> Cell </td> </tr> </table><br /> <strong>PCDATA wrong:</strong> <table>Well<caption>Hello</caption></table><br /> <strong>Missing tr:</strong> <table><td>Well</td></table><br /> <h6>Complex-5: pseudo, disallowed or non-HTML tags</h6> (Try different 'keep_bad' values) <*> Pseudotags <*> <xml>Non-HTML tag xml</xml> <p> Disallowed tag p </p> <ul>Bad<li>OK</li></ul> <h6>Elements</h6> <strong>Unbalanced:</strong> <a href="h"><em>check</a></em><br /> <strong>Non-XHTML:</strong> <div><center><dir></dir></center></div><br /> <strong>Malformed:</strong> < a href=""></a>, <a href="" ></a>, <a href="" ></a>, <a href="" ></a>, <a href="">< /a>, < a href=""></a >, <img src="s" alt="a" />, <img src="s" alt="a"/ >, <imgsrc="s" alt="a" /><br /> <strong>Invalid:</strong> <image src="s" alt="a" /><br /> <strong>Empty:</strong> <img src="s" alt="a" />, <img src="s" alt="a"></img>, <img src="s" alt="a">text</img><br /> <strong>Content invalid:</strong> <a href="h">1<a>2</a></a><br /> <strong>Content invalid?:</strong> <form></form><br /> (try setting 'form' as parent)<br /> <strong>Casing:</strong> <A href=""></a><br /> <strong>Check for tidy:</strong> <br /><hr /></div><hr /></div><hr /></div><div>hi</div> <h6>Entities</h6> <strong>Special:</strong> & 3 < 2 & 5>4 and j >i >a & i<j>a<br /> <strong>Padding:</strong> B B f f  <br /> <strong>Malformed:</strong> & #x27;, &x27;, ' &TILDE;, &tilde<br /> <strong>Invalid:</strong> , �, , �, , &bad;<br /> <strong>Discouraged characters:</strong> , „, , <br /> <strong>Context:</strong> '>', <?<br /> <strong>Casing:</strong> ', ', &TILDE;, ˜ <br /> (also check named-to-numeric and hexdec-to-decimal, and vice versa, conversions) <h6>Format</h6> <strong>Valid but ill-formatted:</strong> text <!-- comment --> text <!-- A c o m m e n t --> <script> <![CDATA[ code ]]> </script><!-- comment --><![CDATA[ cdata ]]> <a>text</b> text<pre id="none">p r e</pre> <textarea>text</textarea> <textarea> text text </textarea> text text <br /><hr /> text <img src="none" alt="none" /> t<em class="none">e<strong>x</strong>t</em> text <img src="none" alt="none" /> <b>t<em> e <strong> x </strong> t</em></b> <a href="a"> text <img src="none" alt="none" /> <b>t <em> e <strong> x </strong> t</em></b> </a> <span style="background-color: yellow;">text <img src="none" alt="none" /> <b> <em> t e <strong> x </strong> t</em></b></span> <script>script</script> <div> <pre id="none">p <a>r</a> e <!-- comment --> </pre> <pre> pre </pre> </div> <div><div><table border="1" style="background-color: red;"><tr><td>Cell</td><td colspan="2" rowspan="2"><table border="1" style="background-color: green;"><tr><td>Cell</td><td colspan="2" rowspan="2"></td></tr><tr><td>Cell</td></tr><tr><td>Cell</td><td>Cell</td><td>Cell</td></tr></table></td></tr><tr><td>Cell</td></tr><tr><td>Cell</td><td>Cell</td><td>Cell</td></tr></table></div></div> (try to compact or beautify) <h6>Forms</h6> (note nesting of 'form', missing required attributes, etc.)<br /> <form> <script type="text/javascript">s</script> <fieldset><legend>p</legend>l <input name="personal_lastname" type="text" tabindex="1"></fieldset> <input name="h" type="checkbox" value="h" tabindex="20"> h <textarea name="t">t</textarea> <form action="a" method="get"></form></form><br /> <form action="b" method="get"><p><input type="text" value="i" /></form><br /> <form>B:<input type="text" value="b" />C:<input type="text" value="c" /></form><br /> (try each of these lines separately)<br /> <form action="a">what<br /> <form action="a">what (try with container as div and as form)<br /> <form>c <a>a</a> <b>b</b><input /><script>s</script> <h6>HTML comments (also CDATA)</h6> <strong>Script inside:</strong> <!--[if gte IE 4]> <SCRIPT>alert('XSS');</SCRIPT> <![endif]--><br /> <strong>Special characters inside: <!-- <![CDATA check ]]> -->, <!-- 3 < 4 > 3.5, & 4 > 4 -->, <!-- che--ck -->, <!--[if !IE]> <--><a>c</a><!--> <![endif]--><br /> <strong>Normal:</strong> <!-- check -->, <!--check -->, <em>comment:<!-- check --></em><!-- check -->, <table><!-- check --><tr><td>text not allowed</td></tr></table><br /> <strong>Malformed:</strong> <![cdata check ]]>, < ![CDATA check ]]>, < ![CDATA check ] ]><br /> Invalid:</strong> <em <!-- check -->>comment in tag content</em>, <!--check--> <h6>HTML5</h6> <strong>figure and figcaption:</strong> <figure><img src="picture.jpg" alt="picture"><figcaption>Caption for the awesome picture</figcaption></figure> <strong>article:</strong> <h1>A</h1><p>B</p><article><h2>C</h2></article><article><h2>E</h2><p>F</p><p>G</p></article> <strong>meter</strong>: <p>Heat <meter min="100" max="200" value="150">150</meter>.</p> <strong>datalist</strong>: <input list="b" /><datalist id="b"><option value="c"><option value="d"></datalist> <h6>Ins-Del</h6> (depending on context, these elements can be of either block or inline type)<br /> <p><ins datetime="d" cite="c"><div>block</div></ins></p><br /> <p><del>d</del></p><br /> <p><ins><del>d</del></ins></p><div><ins><p><del><div>d</div></del></p></ins></div><ins><div>d</div></ins> <h6>Lists</h6> <strong>Invalid character data</strong>: <ul><li>(item</li>)</ul><br /> <strong>Definition list</strong>: <dl><dt>a</dt>bad<dd>first <em>one</em></dd><dt>b</dt><dd>second</dd></dl><br /> <strong>Definition list, close-tags omitted</strong>: <dl><dt>a</dt>bad<dd>first <em>one</em></dd><dt>b<dd>second</dl><br /> <strong>Definition lists, nested</strong>: <dl> <dt>T1</dt> <dd>D1</dd> <dt>T2</dt> <dd>D2<dl><dt>t1</dt><dd>d1</dd><dt>t2</dt><dd>d2</dd></dl></dd> <dt>T3</dt> <dd>D3</dd> <dt>T4</dt> <dd>D4<dl><dt>t1</dt><dd>d1</dd></dl></dd> </dl><br /> <strong>Definition lists, nested, close-tags omitted</strong>: <dl> <dt>T1 <dd>D1</dd> <dt>T2</dt> <dd>D2<dl><dt>t1<dd>d1<dt>t2</dt><dd>d2</dd></dl></dd> <dt>T3 <dd>D3 <dt>T4 <dd>D4<dl><dt>t1<dd>d1</dl></dd> </dl><br /> <strong>Nested</strong>: <ul> <li>l1</li> <li>l2<ol><li>lo1</li><li>lo2</li></ol></li> <li>l3</li> <li>l4<ol><li>lo3</li><li>lo4<ol><li>lo5</li></ol></li></ol></li> </ul><br /> <strong>Nested, directly</strong>: <ul> <li>l1</li> <ol>l2</ol> <li>l3</li> </ul><br /> <strong>Nested, close-tags omitted</strong>: <ul> <li>l1</li> <li>l2<ol><li>lo1<li>lo2</ol> <li>l3 <li>l4<ol><li>lo3<li>lo4<ol><li>lo5</ol></ol> </ul><br /> <strong>Complex</strong>: <ol><script></script><li><table><tr><td> <ul><li id="search" class="widget widget_search"> <form id="searchform" method="get" action="http://kohei.us"> <div> <input type="text" name="s" id="s" size="15" /><br /> <input type="submit" value="Search" /> </div> </form> </li></ul> </td></tr></table></li></ol> <strong>Menu</strong>: <menu type="toolbar"><li><menu label="File"> <button type="button" onclick="new()">New...</button> </menu></li><li><menu label="Edit"><button type="button" onclick="cut()">Cut...</button></menu></li> </menu> <h6>Microdata</h6> <div itemscope itemtype="http://data-vocabulary.org/Person"> I am <span itemprop="name">X</span> but people call me <span itemprop="nickname">Y</span>. Find me at <a href="http://www.xy.com" itemprop="url">www.xy.com</a> </div> <h6>Microsoft Word</h6> <strong>Proprietary tag</strong>: <p class=3DMsoNormal><o:p> </o:p></p><br /> <strong>XML declaration</strong>: <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><br /> <strong>XML-invalid character code-point (may not replicate)</strong>: <p class=3DMsoNormal>“Where is he?” asked both Mary – the one so lovely – and Jane.</p> <h6>Nesting</h6> <strong>Block or inline a</strong>: <p><a href="link">text</a></p><a href="link"><div>hi</div></a><br /> <h6>Non-English text-1</h6> Inscrieţi-vă acum la a Zecea Conferinţă Internaţională<br /> გთხოვთ ახლავე გაიაროთ რეგისტრაცია<br /> večjezično računalništvo<br /> <a title="อ.อ่าง">อ.อ่าง</a><br /> <a title="הירשמו כעת לכנס ">Зарегистрируйтесь сейчас на Десятую Международную Конференцию по</a><br /> (this file should have utf-8 encoding; some characters may not be displayed because of missing fonts, etc.) <h6>Non-English text-2: entities</h6> 用统一码<br /> გთხოვთ<br /> Inscreva-se agora para a Décima Conferência Internacional Sobre O Unicode, realizada entre os dias 10 e 12 de março de 1997 em Mainz na Alemanha. <h6>Ruby</h6> (need compatible browser)<br /> <ruby xml:lang="ja"> <rbc> <rb>斎</rb> <rb>藤</rb> <rb>信</rb> <rb>男</rb> </rbc> <rtc class="reading"> <rt>さい</rt> <rt>とう</rt> <rt>のぶ</rt> <rt>お</rt> </rtc> <rtc class="annotation"> <rt rbspan="4" xml:lang="en">W3C Associate Chairman</rt> </rtc> </ruby><br /> <ruby> <rb>WWW</rb> <rp>(</rp><rt>World Wide Web</rt><rp>)</rp> </ruby><br /> <ruby> A <rp>(</rp><rt>aaa</rt><rp>)</rp> </ruby> <h6>Tables</h6> <strong>Omitted closing tags:</strong> <table> <colgroup><col style="x" /><col style="y" /> <thead> <tr><th>h1c1<th>h1c2 <tbody> <tr><td>r1c1<td>r1c2 <tr><td>r2c1<td>r2c2 </table><br /> <strong>Nested, omitted closing tags:</strong> <table> <colgroup><col style="x" /><col style="y" /> <thead> <tr><th>h1c1<th>h1c2 <tbody> <tr><td>r1c1<td>r1c2<table> <colgroup><col style="x" /><col style="y" /> <thead> <tr><th>h1c1<th>h1c2 <tbody> <tr><td>r1c1<td>r1c2 <tr><td>r2c1<td>r2c2 </table> <tr><td>r2c1<td>r2c2 </table><br /> <h6>Tag transformation</h6> <strong>Font element intended as 'inline' element:</strong> <p><font color='red'>hi</font></p><br /> <strong>Font element intended as 'block' element:</strong> <div><font color='red'><div>hi</div></font></div><br /> <strong>Font element intended as 'block' element:</strong> <center><font color='red'><div>hi</div><div>QQQ</div></font></center><br /> <h6>Tidy</h6> <strong>White-space handling:</strong> abc<em> def </em> ghi abc <em>def</em> ghi <h6>URLs</h6> <strong>Relative and absolute:</strong> <a href="mailto:x"></a>, <a href="http://a.com/b/c/d.f"></a>, <a href="./../d.f"></a>, <a href="./d.f"></a>, <a href="d.f"></a>, <a href="#s"></a>, <a href="./../../d.f#s"></a><br /> (try base URL value of 'http://a.com/b/')<br /> <strong>CSS URLs:</strong> <div style="background-image: url('a.gif');"></div>, <div style="background-image: URL("a.gif");"></div>, <div style="background-image: url('http://a.com/a.gif');"></div>, <div style="background-image: url('./../a.gif');"></div>, <div style="background-image: url('js:xss')"></div><br /> <strong>Double URLs:</strong> <a style="behaviour: url(foo) url(http://example.com/xss.htc)">b</a><br /> <strong>Anti-spam:</strong> (try regex for 'http://a.com', etc.) <a href="mailto:x@y.com"></a>, <a href="http://a.com/b@d.f"></a>, <a href="a.com/d.f" rel="nofollow"></a>, <a href="a.com/d.f" rel="1, 2"></a>, <a href="a.com/d.f"></a>, <a href="b.com/d.f"></a>, <a href="c.com/d.f">, <a href="denied:http://c.com/d.f"></a><br /> <h6>XSS</h6> '';!--"<xss>=&{()}<br /> <img src="javascript%3Aalert('xss');" /><br /> <img src="javascript:alert('xss');" /><br /> <img src="java script:alert('xss');" /><br /> <img src=javascript:alert('XSS') /><br /> <div style="javascript:alert('xss');"></div><br /> <div style="background-image:url(javascript:alert('xss'));"></div><br /> <div style="background-image:url("javascript:alert('xss')" );"></div><br /> <!--[if gte IE 4]><script>alert('xss');</script><![endif]--><br /> <script a=">" src="http://ha.ckers.org/xss.js"></script><br /> <div style="background-image: url('js:xss')"></div><br /> <a style=";-moz-binding:url(http://lukasz.pilorz.net/xss/xss.xml#xss)" href="http://example.com">test</a><br /> <strong>Bad IE7:</strong> <a href="http://x&x=%22+style%3d%22background-image%3a+expression%28alert %28%27xss%3f%29%29">x</a><br /> <strong>Opera:</strong> <a href="\xE2\x80\x83javascript:alert(123)">link</a> <strong>Bad IE7:</strong> <a style=color:expr/*comment*/ession(alert(document.domain))>xxx</a><br /> <strong>Bad IE7:</strong> <a href="xxx" style="background: expression(alert('xss'));">xxx</a><br /> <strong>Bad IE7:</strong> <a href="xxx" style="background: expression(alert('xss'));">xxx</a><br /> <strong>Bad IE7:</strong> <a href="xxx" style="background: %45xpression(alert('xss'));">xxx</a><br /> <strong>Bad IE7:</strong> <a href="xxx" style="background:/**/expression(alert('xss'));">xxx</a><br /> <strong>Bad IE7:</strong> <a href="xxx" style="background:/**/Expression(alert('xss'));">xxx</a><br /> <strong>Bad IE7:</strong> <a href="xxx" style="background:/**/Expression(alert('xss'));">xxx</a><br /> <strong>Bad IE7:</strong> <a href="xxx" style="background: expr%45ssion(alert('xss'));">xxx</a><br /> <strong>Bad IE7:</strong> <a href="xxx" style="background: exp/* */ression(alert('xss'));">xxx</a><br /> <strong>Bad IE7:</strong> <a href="xxx" style="background: exp /* */ression(alert('xss'));">xxx</a><br /> <strong>Bad IE7:</strong> <a href="xxx" style="background: exp/ * * /ression(alert('xss'));">xxx</a><br /> <strong>Bad IE7:</strong> <a href="xxx" style="background:/* x */expression(alert('xss'));">xxx</a><br /> <strong>Bad IE7:</strong> <a href="xxx" style="background:/* */ */expression(alert('xss'));">xxx</a><br /> <strong>Bad IE7:</strong> <a href="x" style="width: /****/**;;;;;;*/expression/**/(alert('xss'));">x</a><br /> <strong>Bad IE7:</strong> <a href="x" style="padding:10px; background:/**/expression(alert('xss'));">x</a><br /> <strong>Bad IE7:</strong> <a href="x" style="background: huh /* */ */expression(alert('xss'));">x</a><br /> <strong>Bad IE7:</strong> <a href="x" style="background:/**/expression(alert('xss'));background:/**/expression(alert('xss'));">x</a><br /> <strong>Bad IE7:</strong> exp/*<a style='no\xss:noxss("*//*");xss:ex/*XSS*//*/*/pression(alert("XSS"))'>x</a><br /> <strong>Bad IE7:</strong> <a style="background:Expre\ssion(alert('xss'));">hi</a><br /> <strong>Bad IE7:</strong> <a style="background:expre\ssion(alert('xss'));">hi</a><br /> <strong>Bad IE7:</strong> <a style="color: \0065 \0078 \0070 \0072 \0065 \0073 \0073 \0069 \006f \006e \0028 \0061 \006c \0065 \0072 \0074 \0028 \0031 \0029 \0029">test</a><br /> <strong>Bad IE7:</strong> <a style="xss:e\0078pression(window.x?0:(alert(/XSS/),window.x=1));">hi</a><br /> <strong>Bad IE7:</strong> <a style="background:url('java script:eval(document.all.mycode.expr)')">hi</a><br /> <h6>Other</h6> 3 < 4 <br /> 3 > 4 <br /> > 3 <br /> <._.> hi! <br /> <<< ALERT >>> <br /> <![if !vml]> some stuff <![endif]> <br /> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> <br /> <uml:ns ns = "urn:www"> <br /> <uml:ns ns = 'urn:www'> <br /> if(13<age AND 21>age){say 'teen'} <br /> age >51 and a smoking history of >51 pack-years <b>was</b> <br /> age > 51 and a smoking history of >51 pack-years <b>was</b> <br /> age <51 and a smoking history of <51 pack-years <b>was</b> <br /> age < 51 and a smoking history of < 51 pack-years <b>was</b> <br /> <b>age >51 and a smoking history of >51 pack-years</b> <br /> <b>age > 51 and a smoking history of >51 pack-years</b> <br /> <b>age <51 and a smoking history of <51 pack-years</b> <br /> <b>age < 51 and a smoking history of < 51 pack-years</b> <br />