li><a class="dropdown-item" href="../articles/SingleStudies.html">Single studies using the SelfControlledCaseSeries package</a></li>
  </ul></li>
<li class="nav-item"><a class="nav-link" href="../news/index.html">Changelog</a></li>
      </ul><ul class="navbar-nav"><li class="nav-item"><a class="external-link nav-link" href="https://ohdsi.github.io/Hades"><img src='https://ohdsi.github.io/Hades/images/hadesMini.png' width=80 height=17 style='vertical-align: top;'></a></li>
<li class="nav-item"><a class="ext