PT - JOURNAL ARTICLE ED - , TI - Care in the air DP - 1989 Mar 15 TA - Canadian Medical Association Journal PG - 584--584 VI - 140 IP - 6 4099 - http://www.cmaj.ca/content/140/6/584.short 4100 - http://www.cmaj.ca/content/140/6/584.full SO - CMAJ1989 Mar 15; 140