title: Analysis of 607 cases of choledochal sphincterotomy.
mesh_terms: D014670:Ampulla of Vater / Q000601:surgery*; D005260:Female; D042882:Gallstones / Q000601:surgery; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D009803:Sphincter of Oddi / Q000601:surgery*; D013525:Surgical Instruments