Reply to: Performing cardiopulmonary resuscitation during ambulance transport: Safety and efficacy. (July 2017) - Cheskes, Sheldon; Byers, Adam; Zhan, Cathy; Verbeek, P.R.; Ko, Dennis; Drennan, Ian R.; Buick, Jason E.; Brooks, Steven C.; Lin, Steve; Taher, Ahmed; Morrison, Laurie J.