Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Flow diagram of the laparoscopic cholecystectomy procedure for patients with combined choledochocystolithiasis at our institute. CBD indicates common bile duct; ERC, endoscopic retrograde cholangiography; GB, gall bladder; PTGBD, percutaneous transhepatic gallbladder drainage.
