Using QRS loop descriptors to characterize the risk of sudden cardiac death in patients with structurally normal hearts

Cheng I. Wu, Yenn Jiang Lin, I. Hsin Lee, Men Tzung Lo, Yu Cheng Hsieh, Amelia Yun Yu Chen, Wei Kai Wang, Shih Lin Chang, Li Wei Lo, Yu Feng Hu, Fa Po Chung, Ta Chuan Tuan, Tze Fan Chao, Jo Nan Liao, Wan Hsin Hsieh, Ting Yung Chang, Chin Yu Lin, An Ning Feng, Chorng Kuang How, Shih Ann Chen