PT - JOURNAL ARTICLE AU - Cheng, Tsung O. TI - The maze procedure for refractory atrial fibrillation DP - 1994 Mar 01 TA - Cleveland Clinic Journal of Medicine PG - 159--159 VI - 61 IP - 2 4099 - http://www.ccjm.org/content/61/2/159.2.short 4100 - http://www.ccjm.org/content/61/2/159.2.full SO - Cleve Clin J Med1994 Mar 01; 61