电邮这篇文章 
Comparative analysis of the efficiency of methods of operative intervention in patients with pilonidal sinus - PDF (俄文)
版权所有 © Katorkin S.E., Lichman L.A., Andreev P.S., Davidova O.E., 2017
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Media Registry Entry of the Federal Service for Supervision of Communications, Information Technology and Mass Communications (Roskomnadzor) PI No. FS77-76803 dated September 24, 2019.