EVALUATION OF THE DE BONO WHISTLE AS A SCREENING TEST OF LUNG FUNCTION.
D001991:Bronchitis; D004864:Equipment and Supplies; D006801:Humans; D008403:Mass Screening; D008906:Mining; D012129:Respiratory Function Tests; D006113:United Kingdom
BRONCHITIS; EQUIPMENT AND SUPPLIES; GREAT BRITAIN; MASS SCREENING; MINING; RESPIRATORY FUNCTION TESTS