Name Info Provider Link
Helicobacter Pylori Infections free resource MedlinePlus Health Information https://medlineplus.gov/helicobacterpyloriinfections.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=17901799.ui
subscription/membership/fee required Wolters Kluwer https://doi.org/10.1097/INF.0b013e31812e52cd