Ansgar M. Brambrink, MD, PhDE.M. Papper Professor and ChairDepartment of AnesthesiologyCollege of Physicians & SurgeonsColumbia University Medical Center / NewYork Presbyterian HospitalNew York, NY 10032, USAJeffrey R. Kirsch, MDProfessor, Chair-EmeritusDepartment of Anesthesiology and Perioperative Medicine Oregon Health & Science UniversityPortland, OR 97239