because approximately 80 % of reported patients with somatostatinomas have gallstones , this study was performed to determine the effects of exogenous somatostatin on gallbladder emptying responses to liquid and solid meals , direct cholinergic stimulation by bethanechol , indirect cholinergic stimulation by sham feeding , and intravenously administered octapeptide of cholecystokinin .
C0008350
gallstones
C0037167
octapeptide