1. Division of Endoscopy, Department of Radiology Hai Phong ‐ Vinh Bao International Hospital Hai Phong Vietnam
2. Department of Radiology Thien Hanh Hospital Buon Ma Thuot Vietnam
3. Department of Radiology Savannakhet Medical‐Diagnostic Center Kaysone Phomvihane Laos
4. Division of Endocrinology, Department of Medicine Walter Reed National Military Medical Center Bethesda USA