1. Department of Medical Ultrasonics, Ultrasonics Artificial Intelligence X-Lab, Institute of Diagnostic and Interventional Ultrasound, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)
2. Department of Medical Ultrasonics, Fetal Medical Center, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)