RT Journal Article SR Electronic T1 Observations on the Physiology of Coronary Circulation JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 69 OP 69 VO 2 IS 1 A1 C. J. Wiggers YR 1935 UL http://www.ccjm.org/content/2/1/69.abstract AB