| CBDS | common bile duct stone |
| EST | endoscopic sphincterotomy |
| EPBD | endoscopic papillary balloon dilation |
| ESBD | EST followed by balloon dilation |
| EPLBD | endoscopic papillary large balloon dilation |
| ESLBD | EST followed by large balloon dilation |
| ML | mechanical lithotripsy |
| PEP | post-ERCP pancreatitis |