It looks like this is a web page, not a feed. I looked for a feed associated with this page, but couldn't find one. Please enter the address of your feed to validate.

Source: http://lexsrv3.nlm.nih.gov

  1. <!DOCTYPE html>
  2. <html lang="en">
  3.  
  4. <head>
  5.  <meta name="viewport" content="width=device-width, initial-scale=1">
  6.  <meta charset="utf-8" />
  7.  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  8.  <title>There seems to be an error</title>
  9.  <link rel="stylesheet" href="https://lhncbc.nlm.nih.gov/assets/stylesheets/LHC_main.css">
  10.  <link rel="stylesheet" href="https://lhncbc.nlm.nih.gov/assets/uswds-2.4.0/css/uswds.min.css" />
  11.  
  12. <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.10/css/all.css" integrity="sha384-+d0P83n9kaQMCwj8F4RJB66tzIwOKmrdb46+porD/OvrJ+37WqIM7UoBtwHO6Nlg" crossorigin="anonymous">
  13.  
  14.  
  15.  
  16.  <!-- Google Tag Manager -->
  17. <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
  18. new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
  19. 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
  20. })(window,document,'script','dataLayer','GTM-59GQ6JK');</script>
  21. <!-- End Google Tag Manager -->
  22. </head>
  23.  
  24. <body>
  25.  <!-- Google Tag Manager (noscript) -->
  26. <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-59GQ6JK"
  27. height="0" width="0" style="display:none;visibility:hidden" title="googletagmanager"></iframe></noscript>
  28. <!-- End Google Tag Manager (noscript) -->
  29.  
  30.  <div class="usa-overlay"></div>
  31.  
  32.  
  33.  <header class="usa-header usa-header--extended insertheader">
  34.  
  35.  
  36.  
  37.  
  38.  
  39.  
  40.  
  41.  
  42.  
  43.  
  44.   <div class="usa-nav-layout grid-row">
  45.     <div class="usa-logo grid-col-10" id="extended-logo">
  46.  
  47.      <div class="header-logo" style="line-height:1rem;">
  48.        <div class="display-flex flex-row flex-align-center">
  49.            <div>
  50.              <a href="https://www.nih.gov"><img src="https://lhncbc.nlm.nih.gov/assets/images/logo-NIH-block.png" alt="NIH logo chevron"></a>
  51.            </div>
  52.            <div class="display-flex flex-column">
  53.              <a href="https://www.nlm.nih.gov">
  54.                <img src="https://lhncbc.nlm.nih.gov/assets/images/logo-NLM-block.png" alt="portion of logo that reads National Library of Medicine">
  55.              </a>
  56.              <a href="https://lhncbc.nlm.nih.gov/index.html">
  57.                <img src="https://lhncbc.nlm.nih.gov/assets/images/logo-LHC-block.png" alt="portion of logo that reads Lister Hill National Center for Biomedical Communications">
  58.              </a>
  59.            </div>
  60.        </div>
  61.  
  62.      </div>
  63.    </div>
  64.    <div class="LHC-menu grid-col-2 display-flex flex-row flex-justify-end flex-align-center">
  65.      <button class="usa-menu-btn"><i class="fas fa-bars fa-2x" title="3 bar menu button"></i></button>
  66.    </div>
  67.  </div>
  68.  
  69.  
  70.    <nav aria-label="Primary navigation" class="usa-nav">
  71.      <div class="usa-nav__inner">
  72.        <button class="usa-nav__close"><img src="https://lhncbc.nlm.nih.gov/assets/images/close.svg" alt="close"></button>
  73.        <div class="nav-container">
  74.          <ul class="usa-nav__primary usa-accordion">
  75.            <li class="usa-nav__primary-item">
  76.              <button class="usa-accordion__button usa-nav__link  researchButton" aria-expanded="false"
  77.                aria-controls="extended-nav-section-one"><span>RESEARCH/R&amp;D</span>
  78.              </button>
  79.              <ul id="extended-nav-section-one" class="usa-nav__submenu" hidden>
  80.                <li class="usa-nav__submenu-item">
  81.                  <a href="https://lhncbc.nlm.nih.gov/LHC-research/research-areas.html">Research/R&amp;D Areas</a>
  82.                </li>
  83.                <li class="usa-nav__submenu-item">
  84.                  <a href="https://lhncbc.nlm.nih.gov/LHC-research/project-list.html">LHNCBC Project List</a>
  85.                </li>
  86.              </ul>
  87.            </li>
  88.            <li class="usa-nav__primary-item">
  89.              <a class="usa-nav__link publicationsButton" href="https://lhncbc.nlm.nih.gov/LHC-publications/publications.html"><span>PUBLICATIONS</span></a>
  90.            </li>
  91.            <li class="usa-nav__primary-item">
  92.              <a class="usa-nav__link downloadsButton" href="https://lhncbc.nlm.nih.gov/LHC-downloads/downloads.html"><span>DOWNLOADS</span></a>
  93.            </li>
  94.            <li class="usa-nav__primary-item">
  95.              <button class="usa-accordion__button usa-nav__link newseventsButton" aria-expanded="false"
  96.                aria-controls="extended-nav-section-four"><span>NEWS/EVENTS</span>
  97.              </button>
  98.              <ul id="extended-nav-section-four" class="usa-nav__submenu" hidden>
  99.                <li class="usa-nav__submenu-item">
  100.                  <a href="https://lhncbc.nlm.nih.gov/LHC-news-events/news/news.html">News</a>
  101.                </li>
  102.                <li class="usa-nav__submenu-item">
  103.                  <a href="https://lhncbc.nlm.nih.gov/LHC-news-events/events/events.html">Events</a>
  104.                </li>
  105.              </ul>
  106.            <li class="usa-nav__primary-item">
  107.              <a class="usa-nav__link personnelButton" href="https://lhncbc.nlm.nih.gov/LHC-personnel/personnel.html"><span>PERSONNEL</span></a>
  108.            </li>
  109.            <li class="usa-nav__primary-item">
  110.              <button class="usa-accordion__button usa-nav__link aboutButton" aria-expanded="false"
  111.                aria-controls="extended-nav-section-six"><span>ABOUT</span>
  112.              </button>
  113.              <ul id="extended-nav-section-six" class="usa-nav__submenu" hidden>
  114.                <li class="usa-nav__submenu-item">
  115.                  <a href="https://lhncbc.nlm.nih.gov/LHC-about/about.html">About LHNCBC</a>
  116.                </li>
  117.                <li class="usa-nav__submenu-item">
  118.                  <a href="https://lhncbc.nlm.nih.gov/LHC-about/training-program.html">Informatics Training Program</a>
  119.                </li>
  120.                <li class="usa-nav__submenu-item">
  121.                  <a href="https://lhncbc.nlm.nih.gov/LHC-about/directors-page.html">Meet the Director</a>
  122.                </li>
  123.                <li class="usa-nav__submenu-item">
  124.                  <a href="https://www.nlm.nih.gov/research/board-of-scientific-counselors.html">NLM Board of Scientific Counselors</a>
  125.                </li>
  126.                <li class="usa-nav__submenu-item">
  127.                  <a href="https://lhncbc.nlm.nih.gov/LHC-about/branches.html">LHNCBC Branches</a>
  128.                </li>
  129.                <li class="usa-nav__submenu-item">
  130.                  <a href="https://www.nih.gov/about-nih/visitor-information" target="_blank">Visit LHNCBC</a>
  131.                </li>
  132.              </ul>
  133.          </ul>
  134.        </div>
  135.  
  136.      </div>
  137.    </nav>
  138.  
  139. <div class="container-fluid bg-danger">
  140.  <div class="container">
  141.    <div class="row alert alert-dismissible fade show" role="alert">
  142.  
  143.      <div class="col-3 col-sm-3 col-xs-3">
  144.        <a href="//combatcovid.hhs.gov">
  145.          <img class="img-fluid pt-xl-3 pt-lg-3 pt-md-4 pt-4 float-right"
  146.            src="https://lhncbc.nlm.nih.gov/assets/images/ASPA_Badge_CC10_Final_smaller.jpg" alt="Combat COVID"> </a>
  147.      </div>
  148.      <div class="col-sm-8 col-12 mb-0">
  149.        <h3 class="text-white mt-3 mb-0">COVID-19 Information</h3>
  150.        <p class="text-white mb-2"> <a
  151.            href='https://www.cdc.gov/coronavirus/2019-ncov/index.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fcoronavirus%2Findex.html'
  152.            class='text-white' aria-label='Latest information from CDC'>Get the latest public health information from
  153.            CDC</a><br /><a href='https://covid19.nih.gov' class='text-white'
  154.            aria-label='Latest information from NIH'>Get the latest research information from NIH</a> | <a
  155.            href='https://salud.nih.gov/covid-19/' class='text-white'
  156.            aria-label='Latest information from NIH - Español'>Español</a> <br /><a href='https://combatcovid.hhs.gov'
  157.            class='text-white' aria-label='Learn more about COVID-19 and you from HHS'>Learn more about COVID-19 and you
  158.            from HHS</a></p>
  159.        <button type="button" class="close mt-4 coopbutton" data-dismiss="alert" aria-label="Close"
  160.          onclick="COVIDclose();">
  161.          <script>
  162.              var COVIDclose = function(){
  163.                  $("div.container-fluid.bg-danger").hide();
  164.              }
  165.          </script>
  166.          <span aria-hidden="true">&times;</span>
  167.        </button>
  168.      </div>
  169.    </div>
  170.  </div>
  171. </div>
  172.  
  173.  
  174.  </header>
  175.  <div class="front_page">
  176.    <div class="usa-layout padding-y-4">
  177.        <h1 class="text-center">The web site is currently under maintenance.</h1>
  178.        <h3 class="text-center">we are sorry for the inconvenience</h3>
  179.    </div>
  180. </div>
  181.  <footer class="bg-primary text-white">
  182.  
  183.  
  184.    <div class="container-fluid">
  185.        <div class="container pt-5">
  186.          <div class="row mt-3">
  187.            <div class="col-md-3 col-sm-6 col-6">
  188.              <p><a href="https://www.nlm.nih.gov/socialmedia/index.html" class="text-white">Connect with NLM</a></p>
  189.              <ul class="list-inline social_media">
  190.                <li class="list-inline-item"><a title="External link: please review our privacy policy." href="https://twitter.com/NLM_NIH"><img src="https://lhncbc.nlm.nih.gov/images/Twitter_W.svg" class="img-fluid" alt="Twitter"></a></li>
  191.                <li class="list-inline-item"><a title="External link: please review our privacy policy." href="https://www.facebook.com/nationallibraryofmedicine"><img src="https://lhncbc.nlm.nih.gov/images/Facebook_W.svg" class="img-fluid" alt="Facebook"></a></li>
  192.                <li class="list-inline-item"><a title="External link: please review our privacy policy." href="https://www.youtube.com/user/NLMNIH"><img src="https://lhncbc.nlm.nih.gov/images/YouTube_W.svg" class="img-fluid" alt="You Tube"></a></li>
  193.              </ul>
  194.            </div>
  195.            <div class="col-md-3 col-sm-6 col-6">
  196.              <p class="address_footer text-white"> National Library of Medicine <br>
  197.                <a href="https://www.google.com/maps/place/8600+Rockville+Pike,+Bethesda,+MD+20894/@38.9959508,-77.101021,17z/data=!3m1!4b1!4m5!3m4!1s0x89b7c95e25765ddb:0x19156f88b27635b8!8m2!3d38.9959508!4d-77.0988323" class="text-white"> 8600 Rockville Pike <br>
  198.                Bethesda, MD 20894 </a></p>
  199.            </div>
  200.            <div class="col-md-3 col-sm-6 col-6">
  201.              <p><a href="https://www.nlm.nih.gov/web_policies.html" class="text-white"> Web Policies </a><br>
  202.                <a href="https://www.nih.gov/institutes-nih/nih-office-director/office-communications-public-liaison/freedom-information-act-office" class="text-white"> FOIA </a><br><a href="https://www.hhs.gov/vulnerability-disclosure-policy/index.html" class="text-white">HHS Vulnerability Disclosure</a></p>
  203.            </div>
  204.            <div class="col-md-3 col-sm-6 col-6">
  205.              <p><a class="supportLink text-white" href="//support.nlm.nih.gov?from="> NLM Support Center </a> <br>
  206.                <a href="https://www.nlm.nih.gov/accessibility.html" class="text-white"> Accessibility </a><br>
  207.                <a href="https://www.nlm.nih.gov/careers/careers.html" class="text-white"> Careers </a></p>
  208.            </div>
  209.          </div>
  210.          <div class="row">
  211.            <div class="col-lg-12">
  212.              <p class="mt-2 text-center"> <a class="text-white" href="//www.nlm.nih.gov/">NLM</a> | <a class="text-white" href="https://www.nih.gov/">NIH</a> | <a class="text-white" href="https://www.hhs.gov/">HHS</a> | <a class="text-white" href="https://www.usa.gov/">USA.gov</a></p>
  213.            </div>
  214.          </div>
  215.        </div>
  216.      </div>
  217.  
  218.     </footer>
  219.  
  220.    <script src="https://www.nlm.nih.gov/scripts/jquery/jquery-latest.min.js"></script>
  221.    <script src="https://lhncbc.nlm.nih.gov/assets/javascript/popper-1.14.7.min.js"></script>
  222.    <script src="https://lhncbc.nlm.nih.gov/assets/uswds-2.4.0/js/uswds.min.js"></script>
  223.    <script src="https://lhncbc.nlm.nih.gov/assets/javascript/headerfooter.js"></script>
  224.    <script src="https://lhncbc.nlm.nih.gov/assets/javascript/supportLink.js"></script>
  225.  
  226.  </body>
  227. </html>
  228.  
  229.  
Copyright © 2002-9 Sam Ruby, Mark Pilgrim, Joseph Walton, and Phil Ringnalda