Brenner H, Rothenbacher D, Bode G, Adler G. Parental history ofgastric or duodenal ulcer and prevalence of Helicobacter pylori infection in preschool children: population based study. Brit Med J.1998; 316: 665.
Drumm B, Perez-Perez GI, Blaser MJ, Sherman PM. Intrafamilial clustering of Helicobacter pylori infection. N Eng J Med.1990; 322: 359-363.
Mitchell JD, Mitchell HM, Tobias V. Acute Helicobacter pylori infection in an infant, associated with gastric ulceration and serological evidence of intrafamilial transmission. Am J Gastroenterol.1992; 87: 382-386.
Bamford KB, Bickley J, Collins JS, et al. Helicobacter pylori: comparison of DNA fingerprints provides evidence for intrafamilial infection. Gut 1993; 34: 1348-1350.
Han SR, Zschausch HC, Meyer HG, et al. Helicobacter pylori: Clonal population structure and restricted transmission within families revealed by molecular typing. J Clin Microbiol.2000; 38: 3635-3651.