TY - JOUR T1 - Laboratory screening. A critical survey JF - Canadian Medical Association Journal JO - CMAJ SP - 1053 LP - 1055 VL - 105 IS - 10 AU - C. C. Korvin AU - R. H. Pearce Y1 - 1971/11/20 UR - http://www.cmaj.ca/content/105/10/1053.abstract ER -