For citations:
Stupin V.A., Siluyanov S.V., Sokhikyan M.B., Tronin R.Yu., Sardarov R.Sh. Repeated gastroscopies at impendent relapse of bleeding from gastroduodenal ulcers. Russian Journal of Gastroenterology, Hepatology, Coloproctology. 2011;21(6):12-18. (In Russ.)