1. Department of Endocrinology, Carol Davila University of Medicine and Pharmacy, C.I. Parhon National Institute of Endocrinology, Bucharest, Romania
2. Departments of Medicine (Endocrinology) and Neurological Surgery, and Northwest Pituitary Center, Oregon Health & Science University, Portland, Oregon, USA
3. Endocrinology Division, Department of Medicine, Hospital Universitario Dr. José E. González, Universidad Autónoma De Nuevo León, Monterrey, Nuevo León, Mexico