This is an example I saw on another submission:<br /><br /><ol class="references">
<li tabindex="0">Campbell DM, Barozzino T, Farrugia M, Sgro M: <a tabindex="0" href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2661330/" target="_blank">High-fidelity simulation in neonatal resuscitation</a>. Paediatr Child Health. 2009, 14:19-23.</li>
<li>Rakshasbhuvankar AA, Patole SK: <a tabindex="0" href="http://dx.doi.org/10.1016/j.resuscitation.2014.07.005" target="_blank">Benefits of simulation based training for neonatal resuscitation education: a systematic review</a>. Resuscitation. 2014, 85:1320-1323. <span class="citation-doi"><a tabindex="0" href="http://dx.doi.org/10.1016/j.resuscitation.2014.07.005" target="_blank">10.1016/j.resuscitation.2014.07.005</a></span></li>
<li>Weinberg ER, Auerbach MA, Shah NB: <a tabindex="0" href="http://dx.doi.org/10.1097/MOP.0b013e32832b32dc" target="_blank">The use of simulation for pediatric training and assessment</a>. Curr Opin Pediatr. 2009, 21:282-287. <span class="citation-doi"><a tabindex="0" href="http://dx.doi.org/10.1097/MOP.0b013e32832b32dc" target="_blank">10.1097/MOP.0b013e32832b32dc</a></span></li>
</ol>