1. Department of Anesthesiology, Perioperative Medicine and Intensive Care Medicine, Paracelsus Medical University , Salzburg, Austria
2. Department of Anesthesiology, Critical Care & Pain Management, Hospital for Special Surgery , New York, New York, USA
3. Department of Orthopedic Surgery / Institute for Healthcare Delivery Science, Department of Population Health Science & Policy, Icahn School of Medicine at Mount Sinai , New York, New York, USA
4. Department of Anesthesiology, Weill Cornell Medicine , New York, New York, USA
5. Spine Surgery Service, Department of Orthopedic Surgery, Hospital for Special Surgery , New York, New York, USA
6. Department of Health Policy and Research, Weill Cornell Medical College , New York, New York, USA