1 Department of Anesthesiology and Critical Care Medicine, Hôpital Lapeyronie, Montpellier, France; Inserm U 1298, Neuro Sciences Institute, University of Montpellier, Montpellier, France. Electronic address: x-capdevila@chu-montpellier.fr.
2 Department of Anatomy, Lille University School of Medicine, Lille, France.
3 Department of Anesthesiology and Critical Care Medicine, Hôpital Lapeyronie, Montpellier, France.