[Comparative studies of chronic primary and secondary gastroduodenitis and duodenitis].
D002908:Chronic Disease; D004382:Duodenitis / Q000473:pathology*; D005756:Gastritis / Q000473:pathology*; D006801:Humans
Sravnitel'naia kharakteristika khronicheskikh pervichnykh i vtorichnykh gastroduodenitov i duodenitov.