1. Department of Respiratory and Critical Care Medicine, Chengdu Third People’s Hospital, Chengdu, China
2. Department of Anatomy, Harbin Medical University, Harbin, China
3. Department of Cardiothoracic Surgery, Meishan People’s Hospital, Meishan, China
4. Department of Cardiothoracic Surgery, Chengdu Third People’s Hospital, Chengdu, China