Eisig, J. N.; Silva, F. M.; Hashimoto, C.; Chehter, E. Z.; Laudanna, A. A. Therapeutic Efficacy of Ranitidine Bismuth Citrate With Clarithromycin for Seven Days in the Eradication of Helicobacter Pylori in Brazilian Peptic Ulcer Patients. Sao Paulo Med J 2003, 121, 15-18.