satisfactory experience has been obtained by the authors primarily from eps on patients in advanced age or high-risk patients with choledocholithiasis following cholecystectomy ( n = 320 ) , benign and malignant stenosis of vater 's papilla ( n = 97 ) , and choledocholithiasis with gall-bladder in situ ( n = 94 ) .
C0008320
cholecystectomy
C0016976
gall-bladder