We randomly allocated patients to esomeprazole therapy ( esomeprazole @ mg , CAM @ mg , amoxicillin ( AC ) @ mg for the first @ d , with all drugs given twice daily ) or lansoprazole therapy ( lansoprazole @ mg , CAM @ mg , AC @ mg for the first @ d , with all drugs given twice daily ) using a minimization method with age , sex , and institution as adjustment factors .