[Is the recurrence of acute episodes of peptic ulcer more frequent in the Spring and Autumn?].
D000208:Acute Disease; D004381:Duodenal Ulcer / Q000503:physiopathology*; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis; D006801:Humans; D010146:Pain / Q000175:diagnosis; D010507:Periodicity; D012008:Recurrence; D012621:Seasons; D013276:Stomach Ulcer / Q000503:physiopathology*
E' maggiore in primavera ed in autunno la frequenza delle riacutizzazioni dell'ulcera.