1. Department of Pathology, University of Tennessee, Memphis and Baptist Memorial Hospital, 800 Madison Avenue, Memphis, TN 38115, USA
2. Pathology Group of the Midsouth, Inc., Trumbull Laboratories, 6046 Knight Arnold Road, Memphis, TN 38115, USA
3. Associated Pathologists, LLP, P.O. Box 37589, Shreveport, LA 71133, USA
4. Department of Surgery, St. Jude's Children's Research Hospital, 332 North Lauderdale, Memphis, TN 38105, USA
5. Department of Hematology/Oncology, St. Jude Children's Research Hospital, 332 North Lauderdale, Memphis, TN 38105, USA
6. Department of Pathology, University of Arkansas for Medical Sciences, and Department of Pediatric Pathology, Arkansas Children's Hospital, Slot 820, 800 Marshall Street, Little Rock, AR 72212, USA