AU - Barrett K FAU - Barrett, Kim E. AU - Barman S FAU - Barman, Susan M. AU - Boitano S FAU - Boitano, Scott AU - Reckelhoff J FAU - Reckelhoff, Jane F. TI - Origin of the Heartbeat & the Electrical Activity of the Heart PT - BOOK SECTION DP - 2017 BTI - Ganong's Medical Physiology Examination & Board Review DA - 2017 Y2 - 2025/02/13 UR - accessmedicine.mhmedical.com/content.aspx?aid=1142556242