PT - JOURNAL ARTICLE AU - Kolff, Willem J. TI - Mock Circulation to test Pumps Designed for Permanent Replacement of Damaged Hearts DP - 1959 Oct 01 TA - Cleveland Clinic Journal of Medicine PG - 223--226 VI - 26 IP - 4 4099 - http://www.ccjm.org/content/26/4/223.short 4100 - http://www.ccjm.org/content/26/4/223.full SO - Cleve Clin J Med1959 Oct 01; 26