A preliminary appraisal of the state of the central nervous system in the seamen of the Polish Merchant Marine.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001289:Attention Deficit Disorder with Hyperactivity / Q000453:epidemiology*; D006801:Humans; D008875:Middle Aged; D009326:Naval Medicine; D009784:Occupational Diseases / Q000453:epidemiology*