Variations of illness incidence in the Navy population.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001294:Attitude to Health; D004522:Educational Status; D005060:Europe; D005191:Family Characteristics; D006801:Humans; D008297:Male; D009017:Morbidity; D009326:Naval Medicine; D009790:Occupations; D044469:Racial Groups; D012767:Ships; D014481:United States; D014744:Vietnam