Epidemiological study of multiple sclerosis in western Poland.
D000818:Animals; D001942:Breast Feeding; D002675:Child, Preschool; D004326:Drinking; D004781:Environmental Exposure; D004782:Environmental Health; D005490:Focal Infection / Q000453:epidemiology; D005843:Geography; D006801:Humans; D006920:Hygiene; D006967:Hypersensitivity / Q000453:epidemiology; D007223:Infant; D007227:Infant Nutritional Physiological Phenomena; D007231:Infant, Newborn; D008892:Milk; D009103:Multiple Sclerosis / Q000453:epidemiology*; D009422:Nervous System Diseases / Q000453:epidemiology; D011044:Poland; D014777:Virus Diseases / Q000453:epidemiology; D014867:Water
D014867:Water