a>
  <ul class="collapse">
  <li><a href="#probability-density-function-1" id="toc-probability-density-function-1" class="nav-link" data-scroll-target="#probability-density-function-1">Probability density function</a></li>
  <li><a href="#sampling-statement-1" id="toc-sampling-statement-1" class="nav-link" data-scroll-target="#sampling-statement-1">Sampling statement</a></li>
  <li><a href="#stan-functions-1" id="toc-stan-functions-1" class="nav-link" data-scroll-target="#stan-functions-1">Stan functions</a