RT Journal Article SR Electronic T1 Comparison of amoxicillin and ampicillin in single-dose oral treatment of males with gonococcal urethritis JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1198 OP 1200 VO 111 IS 11 A1 R. W. Mitchell A1 H. G. Robson YR 1974 UL http://www.cmaj.ca/content/111/11/1198.abstract