The patients were randomly assigned to four treatment groups as follows : patients in Groups @ and @ received rabeprazole ( @ mg ) , amoxicillin ( @ mg ) and furazolidone ( @ mg ) twice daily for @ and @ d , respectively ; patients in Groups @ and @ received rabeprazole ( @ mg ) , bismuth ( @ mg ) , amoxicillin ( @ mg ) and furazolidone ( @ mg ) twice daily for @ and @ d , respectively .