(B) 70 patients(M 47, F 23; age 40 ?7 a) received combined treatment with norfloxacin 0.2 g, tid and colloidal bismuth subcit-rate(CBS) 0.11 g, qid;

• B组(男47；女23；年龄40±7a)服诺氟沙星0.；2g；tid和胶态次枸橼酸铋0