rg" class="external-link">https://www.metafor-project.org</a>).</p>
    </div>
    <div id="references">
    <h2>References</h2>
    <p>Hartung, J. (1999). An alternative method for meta-analysis. <em>Biometrical Journal</em>, <b>41</b>(8), 901–916. <a href="https://doi.org/10.1002/(SICI)1521-4036(199912)41:8&lt;901::AID-BIMJ901&gt;3.0.CO;2-W" class="external-link">https://doi.org/10.1002/(SICI)1521-4036(199912)41:8&lt;901::AID-BIMJ901&gt;3.0.CO;2-W</a></p>
<p>Harville, D. A. (1977). Maximum likelihood ap