1. Department of Radiology, Thien Hanh Hospital , Buon Ma Thuot , Vietnam
2. Department of Radiology, Family Hospital , Da Nang , Vietnam
3. The University of Danang - School of Medicine and Pharmacy , Da Nang , Vietnam
4. Department of Radiology, Tam Tri Nha Trang General Hospital , Nha Trang , Vietnam
5. Department of Radiology, Savannakhet Medical-Diagnostic Center , Kaysone Phomvihane , Laos
6. Division of Endocrinology , Department of Medicine, , Bethesda , United States
7. Walter Reed National Military Medical Center , Department of Medicine, , Bethesda , United States