PT - JOURNAL ARTICLE AU - Olmsted, Frederick AU - Kolff, Willem J. AU - Effler, Donald B. TI - Electronic Cardiac Pacemaker After Open-Heart Operations DP - 1958 Apr 01 TA - Cleveland Clinic Journal of Medicine PG - 84--91 VI - 25 IP - 2 4099 - http://www.ccjm.org/content/25/2/84.short 4100 - http://www.ccjm.org/content/25/2/84.full SO - Cleve Clin J Med1958 Apr 01; 25