TY - JOUR T1 - Free trade makes it easier to cross border--unless you're an MD JF - Canadian Medical Association Journal JO - CMAJ SP - 247 LP - 248 VL - 139 IS - 3 AU - A. Chouinard Y1 - 1988/08/01 UR - http://www.cmaj.ca/content/139/3/247.abstract ER -