Yin, Z., & 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). https://doi.org/10.12669/pjms.38.6.5903