Mass media registration certificate dated December 7, 2006. Series ПИ #ФС 77-26521. Federal service for surveillance over non-violation of the legislation in the sphere of mass communications and protection of cultural heritage. ISSN 2073-8137 Correspondence address 310 Mira Street, Stavropol, Russia, 355017 Tel +7 865 2352511, +7 865 2353229. The effectiveness of various retrieval bags for extracting resected tissues during removal of hydatid cysts (HCs) of the liver in children was evaluated. This