{{Cite journal| doi = 10.47717/turkjsurg.2020.4750| issn = 2564-6850 (Print) 2564-7032 (Electronic) 2564-6850 (Linking)| volume = 36| issue = 3| pages = 284–290| last1 = Doll| first1 = D.| last2 = Stauffer| first2 = V.| last3 = Diekann| first3 = M.| last4 = Van Wyk| first4 = P.| last5 = Luedi| first5 = M. M.| title = Turkey is leading in the 21(st) century pilonidal sinus disease research| journal = Turk J Surg| date = 2021-03-30| pmid = 33778384}}