1. Department of Endocrinology; Xijing Hospital; Fourth Military Medical University; Xi'an China
2. Department of Infectious Diseases; 273 Hospital of PLA; Kuele China
3. Department of Ultrasound; Xijing Hospital; Fourth Military Medical University; Xi'an China
4. Department of Internal Medicine; Avic Xi'an Aero-engine (Group) Hospital; Xi'an China