RT Journal Article SR Electronic T1 Pitfalls, pearls, and practicalities in the diagnosis of Helicobacter pylori infection JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP S14 OP S21 VO 72 IS 5 suppl 2 YR 2005 UL http://www.ccjm.org/content/72/5_suppl_2/S14.abstract AB