1. Department of Radiology, Thien Hanh Hospital, Buon Ma Thuot, Vietnam
2. Department of Radiology, Hue Central Hospital, Vietnam
3. Department of Radiology, Hue University of Medicine and Pharmacy, Vietnam
4. Department of Radiology, Savannakhet Medical-Diagnostic Center, Kaysone Phomvihane, Lao People’s Democratic Republic
5. School of Medicine and Pharmacy, The University of Da Nang, Vietnam
6. Department of Radiology, Da Nang Oncology Hospital, Vietnam
7. Division of Endocrinology, Department of Medicine, Walter Reed National Military Medical Center, Bethesda, MD, USA