How exhaustive are out of hospital cardiac arrest registers? The example of the Northern French Alps Cardiac Arrest Registry. (1st March 2020) - Savary, Dominique; Ricard, Cécile; Drouet, Adrien; Gaillard, Arnaud; Geri, Guillaume; Fadel, Marc; Richard, Jean Christophe; Debaty, Guillaume; Descatha, Alexis