RT Journal Article SR Electronic T1 End Points for Cardiovascular Drug Studies ed. by Ruth Johnsson Hegyeli JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 591 OP 591 VO 52 IS 4 A2 Z. Nicholas Zakov A1 William L. Proudfit YR 1985 UL http://www.ccjm.org/content/52/4/591.1.abstract AB