Acceptability of swivel connectors.
D004209:Disposable Equipment; D007384:Intermittent Positive-Pressure Breathing / Q000295:instrumentation; D007442:Intubation, Intratracheal / Q000295:instrumentation; D010969:Plastics; D011138:Polytetrafluoroethylene; D011312:Pressure; D013242:Sterilization; D014140:Tracheotomy / Q000295:instrumentation*
D010969:Plastics; D011138:Polytetrafluoroethylene