Handwashing: surgical wards. Soap and water compared with 70% alcohol.
D000985:Antisepsis; D001419:Bacteria / Q000302:isolation & purification; D000431:Ethanol; D006225:Hand / Q000382:microbiology*; D006801:Humans; D013527:Perioperative Nursing; D012915:Soaps
D012915:Soaps; D000431:Ethanol