Emorragia acuta da ulcera duodenale. Risultati del trattamento endoscopico del primo sanguinamento e delle recidive. (In Italian.) [Acute hemorrhage caused by duodenal ulcer. Results of endoscopic treatment of the first bleeding episode and of recurrences] - de Manzoni, G; Catalano, F; Festini, M (Ann Ital Chir, 2002)
, discussion 394-396