Yin, Z. and Shen, B. (2022) “Comparative study of the effect of U100 laser and pneumatic ballistic combined with percutaneous transhepatic cholangioscopic lithotomy in the treatment of intra-and extrahepatic bile duct stones and its effect on liver function”, Pakistan Journal of Medical Sciences, 38(6). doi: 10.12669/pjms.38.6.5903.