{{Cite journal| doi = 10.1007/s00268-020-05702-z| issn = 1432-2323 (Electronic) 0364-2313 (Linking)| volume = 44| issue = 11| pages = 3702–3709| last1 = Luedi| first1 = M. M.| last2 = Schober| first2 = P.| last3 = Stauffer| first3 = V. K.| last4 = Diekmann| first4 = M.| last5 = Doll| first5 = D.| title = Global Gender Differences in Pilonidal Sinus Disease: A Random-Effects Meta-Analysis| journal = World J Surg| date = 2020-07-19| pmid = 32681319}}