1. Department of Congenital Heart Disease, General Hospital of Northern Theater Command, Shenyang, China;
2. Department of Medical Administration, General Hospital of Northern Theater Command, Shenyang, China;
3. Department of Aerospace Physiology, Fourth Military Medical University, Xi’an, China;
4. Department of Cardiology, Affiliated Hospital of The Bethune Medical Noncommissioned Officer (NCO) School, Army Medical University, Shijiazhuang, China