They were assigned to either the triple therapy with rabeprazole 10mg b.i.d. / q.i.d. , amoxicillin 500mg q.i.d , and sitafloxacin 100mg b.i.d. ( RAS ) for 1 or 2 weeks or the triple therapy with rabeprazole 10mg b.i.d. / q.i.d. , metronidazole 250mg b.i.d. , and sitafloxacin 100mg b.i.d. ( RMS ) for 1 or 2 weeks .