RT Journal Article SR Electronic T1 The clinical trials on gamma globulin for polio: victims of marketing success JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E967 OP E969 DO 10.1503/cmaj.170232 VO 189 IS 29 A1 Stephen E. Mawdsley YR 2017 UL http://www.cmaj.ca/content/189/29/E967.abstract AB