Reply to "Axonal hyperexcitability due to Schwann cell involvement in chronic progressive external ophthalmoplegia". Issue 10 (October 2017) - Guéguen, Antoine; Jardel, Claude; Polivka, Marc; Tan, S. Veronica; Gray, Françoise; Vignal, Catherine; Lombès, Anne; Gout, Olivier; Bostock, Hugh