[Studies in peptic ulcer deserve more emphasis (author's transl)].
D002681:China; D005743:Gastrectomy; D005768:Gastrointestinal Hormones / Q000502:physiology; D006801:Humans; D010437:Peptic Ulcer / Q000453:epidemiology / Q000601:surgery*
D005768:Gastrointestinal Hormones