TY - JOUR T1 - New program at Ontario hospital will screen "pre-embryos" for genetic disease JF - Canadian Medical Association Journal JO - CMAJ SP - 605 LP - 605 VL - 148 IS - 4 AU - C. Johnston Y1 - 1993/02/15 UR - http://www.cmaj.ca/content/148/4/605.abstract ER -