1. Department of Anesthesiology; Hadassah Hebrew University Medical Center; Jerusalem Israel
2. Sackler School of Medicine; Tel Aviv University; Tel Aviv Israel
3. Post-Anesthesia Care Unit; Department of Anesthesiology; Chaim Sheba Medical Center; Tel-Hashomer Ramat-Gan Israel
4. Washington University School of Medicine; St Louis MO USA
5. Department of Anesthesia; Wolfson Medical Center; Holon Israel
6. Outcomes Research Consortium; Cleveland OH USA
7. Department of Anesthesia; Sunnybrook Health Sciences Centre; University of Toronto; Toronto Canada
8. Department of Anesthesiology and Director; Mother and Child Anesthesia Unit; Hadassah Hebrew University Hospital; Jerusalem Israel
9. Department of Anesthesiology and Director; Division of Obstetric Anesthesiology; Washington University School of Medicine; St Louis MO USA