title: Epidemiological approach to the investigation of some diseases with a mass incidence.
mesh_terms: D000747:Anemia, Hypochromic; D001161:Arteriosclerosis; D003604:Czechoslovakia; D004034:Diet Surveys; D005260:Female; D006801:Humans; D008297:Male; D009748:Nutrition Disorders; D009747:Nutritional Physiological Phenomena; D009765:Obesity