title: Evaluation of the psychical state of deck crew seamen with long period of service at sea.
authors.affiliation: Institute of Maritime and Tropical Medicine, Gdynia.
authors.forename: J
authors.initials: J
authors.lastname: Nitka
mesh_terms: D000328:Adult; D006801:Humans; D007899:Leisure Activities; D008297:Male; D008875:Middle Aged; D009326:Naval Medicine; D009483:Neuropsychological Tests; D009790:Occupations; D012767:Ships; D012931:Social Environment; D012934:Social Isolation; D013315:Stress, Psychological / Q000453:epidemiology* / Q000523:psychology; D013997:Time Factors