F. M. Silva, J. N. Eisig, E. Z. Chehter, J. J. da Silva, and A. A. Laudanna, “ Low efficacy of an ultra-short term, once-daily dose triple therapy with omeprazole, azithromycin, and secnidazole for Helicobacter pylori eradication in peptic ulcer ”, Rev. Hosp. Clín., vol. 57, no. 1, pp. 9–14, Feb. 2002, doi: 10.1590/S0041-87812002000100002.