Schwartz, H I Twice-daily versus thrice-daily clarithromycin in combination with ranitidine bismuth citrate in the eradication of Helicobacter pylori. [electronic resource] - Helicobacter Jun 1999 - 121-7 p. digital Publication Type: Clinical Trial; Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 1083-4389 Standard No.: 10.1046/j.1523-5378.1999.98005.x doi Subjects--Topical Terms: AdultAnti-Bacterial Agents--therapeutic useAnti-Ulcer Agents--therapeutic useBismuth--adverse effectsClarithromycin--adverse effectsDouble-Blind MethodDrug Therapy, CombinationFemaleHelicobacter Infections--drug therapyHelicobacter pylori--drug effectsHumansMaleMicrobial Sensitivity TestsMiddle AgedRanitidine--adverse effects