1. Department of Laboratory Medicine & Pathology, Mayo Clinic, Rochester, MN
2. Midwest Comprehensive Pain Care, Milwaukee, WI
3. Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD
4. University of Virginia Health System, Charlottesville, VA
5. Retired from University of North Carolina
6. National Institute on Drug Abuse, Bethesda, MD
7. University of South Florida College of Medicine, Tampa, FL
8. Department of Pathology, University of Utah and ARUP Laboratories, Salt Lake City, UT
9. Brigham and Women's Hospital, Boston, MA