title: Horizontal flow operating room clean rooms.
mesh_terms: D000391:Air Microbiology; D000985:Antisepsis; D001424:Bacterial Infections / Q000382:microbiology; D003120:Colorado; D004780:Environment, Controlled; D006621:Hip Joint; D006801:Humans; D007595:Joint Prosthesis; D007719:Knee Joint; D009873:Operating Rooms / Q000592:standards*; D013210:Staphylococcus / Q000302:isolation & purification; D013523:Surgical Equipment; D013530:Surgical Wound Infection / Q000453:epidemiology