The patients were randomly assigned to four treatment groups as follows : patients in Groups 1 and 3 received rabeprazole ( 10 mg ) , amoxicillin ( 1000 mg ) and furazolidone ( 100 mg ) twice daily for 7 and 10 d , respectively ; patients in Groups 2 and 4 received rabeprazole ( 10 mg ) , bismuth ( 220 mg ) , amoxicillin ( 1000 mg ) and furazolidone ( 100 mg ) twice daily for 7 and 10 d , respectively .