Ascertainment of Helicobacter pylori Infection and Eradication Treatment Using a Nationwide Electronic Health Record Database oleh Shailja C. Shah, Rohan Gupta, Ranier Bustamante, Mark Lamm, Hanin Yassin, Ashley Earles, Adriana Hung, Alese Halvorson, Robert Greevy, Samir Gupta, Joshua Demb, Lin Liu, Christianne L. Roumie