RT Journal Article SR Electronic T1 Revised guidelines on ethical and legal considerations in anonymous unlinked HIV seroprevalence research. Federal Centre for AIDS Working Group on Anonymous Unlinked HIV Seroprevalence Research JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1743 OP 1746 VO 146 IS 10 YR 1992 UL http://www.cmaj.ca/content/146/10/1743.abstract