Aseptic rituals unmasked.
D000985:Antisepsis / Q000379:methods*; D001207:Asepsis / Q000379:methods*; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D008397:Masks; D009873:Operating Rooms; D011247:Pregnancy; D011481:Protective Clothing; D011645:Puerperal Infection / Q000517:prevention & control