George Washington Crile (1910-1924 Chair of Surgery)[12] - Performed first blood transfusion. Established Lakeside Hospital of University Hospitals Case Medical Center,[12] and later co-founded Cleveland Clinic. Claude Beck (Surgery residency alum; 1924 -1971 Professor of Cardiovascular Surgery - first such position in US)[13] - Performed first surgical treatment of coronary artery disease (1935).[13] Performed first defibrillation using machine he built with James Rand (1947)[14] Developed concept of Beck's Triad.