Reply to Gilchrist et al. and to Musher. (9th October 2017) - Lopez, Benjamin; Boucher, Anne; Bahuaud, Mathilde; Mortuaire, Geoffrey; Melliez, Hugues; Launay, David; Terriou, Louis; Wemeau-Stervinou, Lidwine; Wallaert, Benoît; Faure, Karine; Wallet, Frédéric; Hachulla, Eric; et al.