title: Multi-hospital trial on the use of ultraclean air systems in orthopaedic operating rooms to reduce infection: preliminary communication.
mesh_terms: D000389:Air Conditioning / Q000295:instrumentation; D000391:Air Microbiology; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D000985:Antisepsis / Q000379:methods*; D001207:Asepsis / Q000379:methods*; D001419:Bacteria / Q000302:isolation & purification; D006801:Humans; D009873:Operating Rooms; D009985:Orthopedics; D013530:Surgical Wound Infection / Q000382:microbiology; D014691:Ventilation
chemical_list: D000900:Anti-Bacterial Agents