Decision for surgery in the management of a rare condition, childhood gallbladder polyps, and the role of ultrasonography - BAYRAM KABAÇAM, Gülşah; AKBIYIK, Fatih; LİVANELİOĞLU, Ziya; TİRYAKİ, H. Tuğrul; KARAKUŞ, Esra; KABAÇAM, Gökhan (Turkish Journal of Gastroenterology, 2013)