The system further provides for detecting changes in air pressure in the air flow supplied to a mask adapted to supply positive airway pressure to {HEAD ~ a patient undergoing treatment} for {TAIL ~ a sleep disorder} 
for
The system further provides for detecting changes in air pressure in the air flow supplied to a mask adapted to supply positive airway pressure to { HEAD ~ a patient undergoing treatment } for { TAIL ~ a sleep disorder }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL