RT Journal Article SR Electronic T1 Cimetidine versus ranitidine for refractory Zollinger-Ellison syndrome JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 550a OP 550 VO 130 IS 5 A1 de Gara, C. J. A1 Gledhill, T. A1 Hunt, R. H. YR 1984 UL http://www.cmaj.ca/content/130/5/550a.abstract