Sterility control.
D001424:Bacterial Infections / Q000517:prevention & control*; D004755:Enterobacteriaceae; D006801:Humans; D008722:Methods; D011550:Pseudomonas aeruginosa; D012138:Respiratory Therapy / Q000295:instrumentation*; D013242:Sterilization; D013696:Temperature; D014464:Ultrasonic Therapy / Q000295:instrumentation; D012122:Ventilators, Mechanical; D014871:Water Microbiology; D014876:Water Pollution