Koprivnjača — разлика између измена

* [[gljivice]], [[bakterije]],<ref name="pmid8601663">{{cite journal |author=Tebbe B, Geilen CC, Schulzke JD, Bojarski C, Radenhausen M, Orfanos CE |title=Helicobacter pylori infection and chronic urticaria |journal=J. Am. Acad. Dermatol. |volume=34 |issue=4 |pages=685–6 |year=1996 |month=April |pmid=8601663 |doi= 10.1016/S0190-9622(96)80086-7|url=http://linkinghub.elsevier.com/retrieve/pii/S0190-9622(96)80086-7 |format=}} {{dead link|date=July 2010}}</ref> [[crevni paraziti]], neki [[virus]]i,