[A comparative study of epidemiology of hypertension in the urban and rural areas of Shanghai (author's transl)].
D000293:Adolescent; D000328:Adult; D002681:China; D006262:Health; D006801:Humans; D006973:Hypertension / Q000453:epidemiology*; D008875:Middle Aged; D012423:Rural Health; D014504:Urban Health