Ahmed, K SKhan, A AAhi, J DHabibullah, C M2008-01-302009-05-282008-01-302009-05-282008-01-30Ahmed KS, Khan AA, Ahi JD, Habibullah CM. Parental history of ulcer and the prevalence of Helicobacter pylori infection in their offspring. Indian Journal of Medical Microbiology. 2008 Jan-Mar; 26(1): 90http://imsear.searo.who.int/handle/123456789/54062engFamily HealthHelicobacter Infections --epidemiologyHelicobacter pylori --isolation & purificationHumansPrevalenceUlcer --epidemiologyParental history of ulcer and the prevalence of Helicobacter pylori infection in their offspring.Letter