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