1. Tufts Medical Center; Departments of Anesthesiology and Pharmacy; Box #420 800 Washington Street Boston Massachusetts USA 02111
2. Healthcare Policies and Economic Outcomes; St Louis MO USA
3. New England Medical Center; Anesthesia; 750 Washington Street, Box #298 Boston MA USA 02111
4. Brown University Public Health Program; Center for Evidence-based Medicine; 121 S. Main Street Providence RI USA 02912
5. Tufts University School of Medicine; Department of Public Health and Community Medicine; 136 Harrison Avenue, Stearns 203C Boston USA