ECG Quiz 59 Johnson Francis | November 13, 2019 | ECG / Electrophysiology, ECG Library | No Comments ECG Quiz 59 Click here for the discussion Related Posts Derivatives of sinus node recovery time No Comments | Apr 22, 2012 DR-FLASH score for arrhythmogenic left atrial substrate No Comments | Apr 15, 2020 Commotio Cordis – a cause for sudden death of athletes No Comments | Nov 15, 2008 Arrhythmias in Adolescents No Comments | Apr 11, 2010 About The Author Johnson Francis Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal