Response by Karam et al to Letter Regarding Article, "Identifying Patients at Risk for Prehospital Sudden Cardiac Arrest at the Early Phase of Myocardial Infarction: The e-MUST Study (Evaluation en Médecine d'Urgence des Stratégies Thérapeutiques des infarctus du myocarde)". Issue 20 (16th May 2017) - Karam, Nicole; Bataille, Sophie; Marijon, Eloi; Tafflet, Muriel; Lapostolle, Frederic; Spaulding, Christian; Jouven, Xavier; Lambert, Yves