1. Department of Ultrasound, Xijing Hypertrophic Cardiomyopathy Center, Xijing Hospital, Fourth Military Medical University, Xi’an, Shannxi, China
2. Department of Radiation Oncology, Xijing Hypertrophic Cardiomyopathy Center, Xijing Hospital, Fourth Military Medical University, Xi’an, Shannxi, China
3. Heart & Vascular Institute, Stamford Hospital, Stamford, CT, USA