4Hafeez A, Ali S, Hassan M. Recurrent abdominal pain and Helicobacter pylori infection in children[J]. J Pak Med Assoc, 1999, 49(5):112-114.
5Malaty HM. Helicobacter pylori infection and eradication in pediatric patients[J]. Pediatr Drugs, 2000,2(5):357-365.
6Macarthur C. Helicobacter pylori infection and childhood recurrent abdominal pain: lack of evidence for a cause and effect relationship[J]. Can J Gastroenterol, 1999, 13(7):607-610.
9Intemational agency for research on cancer. Schistosome, Liver flukes and Helicobacter pylori, IARC monographs on the evaluation on carcinogenic rish to humans[J]. Vol 61, Lyon: IARC, 1994.