- Have severe concomitant disease (i.e. uncontrolled or insuline dependent diabetes mellitus, symptomatic bladder stone (patients have asemptomatic, not undergone colesistit, stone <3cm and polib <1cm can be included), active or unhealed gastric or duodenum ulcer, Zollinger Ellison syndrome, primary esophageal motility disorder, pancreatitis, inflammatory bowel disease, chronic hepatic disease, severe lung disease, uncontrolled kidney failure, cardiac failure, cerebrovascular disease, epilepsy) which affects the conduct and result of study.