1. Ermolov AS, Smolyar AN, Shlyahovsky IA, Khramenkov MG. 20 years of emergency abdominal surgery in Moscow. Surgery. 2014;5:7-16. (In Russ.)
2. Antonov ON, Rybalchenko AV. Evolution of surgical treatment of perforated pyloroduodenal ulcers. Annals of Surgery. 2013;2:22-28. (In Russ.)
3. Kirsanov II, Gulyaev AA, Pakhomova GV, Yartsev PA, Levitsky VD, Chernysh OA. Video laparoscopy for perforated stomach and duodenal ulcer. Endoscopic surgery. 2010;1:8-12. (In Russ.)
4. Life in the human stomach: persistence strategies of the bacterial pathogen Helicobacter pylori