in epidemiological study of esophageal carcinoma which was conducted in nov.1966 in iran, the incidence cases in the east area of mazandaran (hottan-gharagol) specifically in the torkaman region was noticeable. the frequency of the disease was gradually declined from east to west for instance in gillan (pamsar-kyasara) the incidence was low. since 1968 a joint-iran (institute of nutrition scien...
