TY - JOUR T1 - Preventive medicine: how to be your own doctor sometimes JF - Canadian Medical Association Journal JO - CMAJ SP - 1008 LP - 1008 VL - 111 IS - 9 AU - W. Blair Y1 - 1974/11/02 UR - http://www.cmaj.ca/content/111/9/1008.abstract ER -