1. Department of Pathology, Hutzel Hospital, 4707 St. Antoine Boulevard, Detroit, MI 48201, USA
2. Kosair Children's Hospital, P.O. Box 35070, Louisville, KY 40232-5070, USA
3. University of Alabama at Birmingham, Department of Pathology, 1922 - 7th Avenue South, Kracke Building, Room K526, Birmingham, AL 35233, USA
4. Department of Pathology, JW Riley Hospital for Children, 702 Barnhill Drive, Room 2536, Indianapolis, IN 46202-5200, USA
5. Institute of Pathology, Case Western Reserve University, 2085 Adelbert Road, Cleveland, OH 44106, USA
6. Department of Pathology, A-630 East Fee, Michigan State University, East Lansing, MI 48824, USA