1. Professional Staff, Departments of General Anesthesiology and Outcomes Research, Cleveland Clinic, Cleveland, Ohio.
2. Michael Cudahy Professor and Chair, Department of Outcomes Research, Cleveland Clinic.
3. Resident, Department of Internal Medicine, Cleveland Clinic.
4. Resident, Department of Pathology, Ball Memorial Hospital, Muncie, Indiana.
5. Associate Staff Biostatistician, Departments of Quantitative Health Sciences and Outcomes Research, Cleveland Clinic.
6. Chairman, Spine Institute, Cleveland Clinic.
7. Professional Staff, Department of Ophthalmology, Cleveland Clinic.
8. Professor and Vice-chair, Department of Outcomes Research, Cleveland Clinic, and Visiting Scientist, Department of Anesthesia, McMaster University, Hamilton, Ontario, Canada.