1. Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
2. Department of Respiratory Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
3. Department of Cardiothoracic Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
4. Department of Vascular, Thyroid and Breast Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China