Main health problems of seafarers.
D000328:Adult; D002318:Cardiovascular Diseases / Q000453:epidemiology; D005767:Gastrointestinal Diseases / Q000453:epidemiology; D006262:Health; D006304:Health Status; D006801:Humans; D008297:Male; D008875:Middle Aged; D009017:Morbidity; D009135:Muscular Diseases / Q000453:epidemiology; D009326:Naval Medicine; D009422:Nervous System Diseases / Q000453:epidemiology; D009497:Neurotic Disorders / Q000453:epidemiology; D009784:Occupational Diseases / Q000453:epidemiology; D011044:Poland; D012767:Ships