RT Journal Article SR Electronic T1 Laboratory screening. A critical survey. II JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1157 OP 1161 VO 105 IS 11 A1 C. C. Korvin A1 R. H. Pearce YR 1971 UL http://www.cmaj.ca/content/105/11/1157.abstract