TY - JOUR T1 - MDs should warn patients that an extended trek south may be expensive venture JF - Canadian Medical Association Journal JO - CMAJ SP - 1575 LP - 1577 VL - 147 IS - 10 AU - M. Korcok Y1 - 1992/11/15 UR - http://www.cmaj.ca/content/147/10/1575.abstract ER -