1. Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, New York.
2. Department of Medicine, Endocrinology Service, Memorial Sloan-Kettering Cancer Center, New York, New York.
3. Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, New York.
4. Department of Pathology, Hospedale Bellaria, University of Bologna, Bologna, Italy.