Oxygen^pre chest physiotherapy:PPres:Pt:BldC:Qn:Transcutaneous O2 monitor
oxygen^pre chest physiotherapy:ppres:pt:bldc:qn:transcutaneous o2 monitor
Oxygen^pre chest physiotherapy:PPres:Pt:BldC:Qn:Transcutaneous O2 monitor
oxygen^pre chest physiotherapy:ppres:pt:bldc:qn:transcutaneous o2 monitor