title: Seasonal fluctuations in peptic ulcer bleeding: an Italian experience.
authors.forename: S A
authors.initials: SA
authors.lastname: Grassi
authors.forename: G
authors.initials: G
authors.lastname: Battaglia
authors.forename: F
authors.initials: F
authors.lastname: Di Mario
mesh_terms: D004381:Duodenal Ulcer / Q000150:complications*; D006801:Humans; D007558:Italy / Q000453:epidemiology; D010438:Peptic Ulcer Hemorrhage / Q000453:epidemiology*; D012621:Seasons; D013276:Stomach Ulcer / Q000150:complications*