Mullins, C. B. (Charles B.)2016-01-252016-01-251974-01-17https://hdl.handle.net/2152.5/2892Detailed formal protocol with illustrations and extensive bibliography. Note: Some information has been redacted in the publicly-available version due to privacy issues. For questions, contact archives@utsouthwestern.edu.enGrand RoundsTeaching RoundsSick Sinus SyndromeSinoatrial NodeOther77614