[Ways to improve gastroenterological service in the USSR].
D005762:Gastroenterology / Q000592:standards*; D005767:Gastrointestinal Diseases / Q000453:epidemiology; D006801:Humans; D011787:Quality of Health Care; D014586:USSR
Puti sovershenstvovaniia gastroénterologicheskoĭ sluzhby v SSSR