2Koivusalo AI, Pakarinen MP, Sittiwet C, et al. Cholesterol,non-cholesterol sterols and bile acids in paediatric gallstones[J].Dig Liver Dis, 2010, 42(1):61-66.
4Shirley H, Leslie S, Gary I.Ultrasound and MR identification of ectopic gallstones as a complication of laparoscopic cholecystectomy[J]. Eur J Radiol, 2011, 77(3): 95-97.
