1 AP-HP, La Pitié-Salpêtrière university hospital, department of neurosurgery, 75013 Paris, France; Sorbonne university, UPMC, université Paris 06, 75005 Paris, France. Electronic address: [email protected].
2 AP-HP, La Pitié-Salpêtrière university hospital, department of neurosurgical anesthesiology and critical care, 75013 Paris, France.