PT - JOURNAL ARTICLE ED - , TI - Femoral head alert DP - 2001 Oct 02 TA - Canadian Medical Association Journal PG - 938--938 VI - 165 IP - 7 4099 - http://www.cmaj.ca/content/165/7/938.1.short 4100 - http://www.cmaj.ca/content/165/7/938.1.full SO - CMAJ2001 Oct 02; 165