Development of a new motivational spirometer--rationale for hardware and software.
D000328:Adult; D000368:Aged; D002140:California; D003201:Computers; D004582:Electronics, Medical; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D009042:Motivation; D013147:Spirometry; D014797:Vital Capacity