RT Journal Article SR Electronic T1 Types of Essential Hypertension and Their Relationship to Therapy JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 166 OP 172 VO 15 IS 4 A1 Lipscomb, Alys YR 1948 UL http://www.ccjm.org/content/15/4/166.abstract AB