9Zherlov GK, Koshel' AP, Gibadulin NV, et al. Choice of surgical strategy in gastroduodenal ulcer hemorrhage[J]. Vestn Khir ImII Grek, 2001, 160(2):18- 21.
10Hochain P, Merle V, Capet C, et al, Upper digestive hemorrhage in patients over 80 years of age: incidence and prognostic factors, Gastroenterol Clin Biol, 1996. 20(8-9): 638-664.
