1. Department of Endocrinology, Portuguese Institute of Oncology, Lisbon Center, Lisbon, Portugal.
2. Department of Nuclear Medicine, Portuguese Institute of Oncology, Lisbon Center, Lisbon, Portugal.
3. Clinical Research Unit, Portuguese Institute of Oncology, Lisbon Center, Lisbon, Portugal.
4. South Regional Cancer Registry, Lisbon, Portugal.
5. Faculty of Medical Sciences, New University of Lisbon, Lisbon, Portugal.