PT - JOURNAL ARTICLE ED - , TI - Essential hypertension: a sign in search of a disease DP - 1991 Sep 01 TA - Canadian Medical Association Journal PG - 384--385 VI - 145 IP - 5 4099 - http://www.cmaj.ca/content/145/5/384.short 4100 - http://www.cmaj.ca/content/145/5/384.full SO - CMAJ1991 Sep 01; 145