Jefferson T, Del Mar CB, Dooley L 외 (2011). “Physical interventions to interrupt or reduce the spread of respiratory viruses”. 《Cochrane Database Syst Rev》 (7): CD006207. doi:10.1002/14651858.CD006207.pub4. PMID21735402.
Jefferson T, Del Mar CB, Dooley L 외 (2011). “Physical interventions to interrupt or reduce the spread of respiratory viruses”. 《Cochrane Database Syst Rev》 (7): CD006207. doi:10.1002/14651858.CD006207.pub4. PMID21735402.