1. Department
Endocrinology and Metabolism, University of Pisa, via Paradisa
2, 56124 Pisa, Italy
2. Center
for Biological Sequence Analysis, Technical University of Denmark, Kemitorvet Building 208, DK-2800 Lyngby, Denmark
3. Pediatric
Surgical Research Laboratories, MassGeneral Hospital for Children, Massachusetts General Hospital, 55 Fruit Street, Boston, Massachusetts 02114, United States
4. Harvard Medical School, 25 Shattuck
Street, Boston, Massachusetts 02115, United States