L. Erawati, S. Ridho, G. Nainggolan, A. F. Syam, and C. Manan, “Management of Upper Gastrointestinal Bleeding due to NSAID Gastropathy that is Unresponsive to Ranitidine”, InaJGHE, vol. 4, no. 2, pp. 59–63, Jan. 2003.