Disability or disinclination? Impairment or importuning?
D000328:Adult; D000367:Age Factors; D002170:Canada; D002648:Child; D003032:Coal Mining; D004185:Disability Evaluation; D004734:Energy Metabolism; D006801:Humans; D008306:Malingering; D008875:Middle Aged; D005082:Physical Exertion; D012120:Respiration Disorders / Q000175:diagnosis* / Q000191:economics; D012129:Respiratory Function Tests / Q000592:standards*