Physical interventions to interrupt or reduce the spread of respiratory viruses :   systematic review / 
Tom Jefferson [and nine others] 
<br/><br/>In: Cochrane Database Syst Rev. 2011 Jul; 2011(7): CD006207 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coronavirus--isolation and purification<br/>Coronavirus Infections--prevention and control