1. Department of Pathology, University of South Florida, Tampa General Hospital, P.O. Box 1289, Tampa, FL 33601-1289, USA
2. Department of Obstetrics and Gynecology, University of South Florida, Tampa General Hospital, P.O. Box 1289, Tampa, FL 33601-1289, USA
3. Department of Pediatrics, University of South Florida, 17 Davis Boulevard, Tampa, FL 33601, USA