General principles in the assessment of fitness for work in the Merchant Navy.
D000328:Adult; D004185:Disability Evaluation; D004470:Economics, Medical; D006268:Health Facilities; D006801:Humans; D008297:Male; D008875:Middle Aged; D009326:Naval Medicine; D009790:Occupations; D010808:Physical Examination; D010809:Physical Fitness; D010820:Physicians