The patients received levofloxacin 500 mg daily , amoxicillin 1 g b.i.d. and lansoprazole 30 mg b.i.d. for ten days ( LAL ) in the levofloxacin group ; moxifloxacin 400 mg daily , amoxicillin 1 g b.i.d. and lansoprazole 30 mg b.i.d. ( MAL ) in the moxifloxacin group ; and clarithromycin 500 mg b.i.d. , amoxicillin 1 g b.i.d. and lansoprazole 30 mg b.i.d. ( CAL ) in the standard treatment group .