1.
Metzger J, Styger S, Sieber C, Vogelbach P, Harder F. Prevalence of Helicobacter pylori infection in peptic ulcer perforations. Swiss Med Wkly [Internet]. 2001 Feb. 24 [cited 2024 Apr. 12];131(0708):99-103. Available from: https://smw.ch/index.php/smw/article/view/29