TY - JOUR T1 - Disposable surgical face masks for preventing surgical wound infection in clean surgery JO - Sao Paulo Medical Journal A1 - Lipp, Allyson A1 - Edwards, Peggy SN - 1516-3180 UL - 10.1590/S1516-31802012000400014 VL - 130 Y1 - 2012 PB - Brasil ER -