1. Gene Transfer and Gene Expression Laboratory, Department of Medicine and Immunology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021.
2. Department of Pediatrics, Memorial Sloan-Kettering Cancer Center, New York, NY 10021.
3. Clinica Pediatrica, Ospedale Regionale Microcitemie, I-09121Cagliari, Italy.
4. Department of Pediatrics, New York-Presbyterian Hospital/Weill Medical College of Cornell University, New York, NY 10021.
5. Oncoematologia Pediatrica, IRCCS Policlinico San Matteo, University of Pavia, I-27100 Pavia, Italy.
6. Division of Hematology II and Piera Cutino Research Unit, Azienda Ospedaliera Vincenzo Cervello, I-90146 Palermo, Italy.
7. Gene Transfer and Somatic Cell Engineering Facility, Department of Medicine and Immunology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021.
8. Molecular and Clinical Hematology Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892.