1. Department of Thoracic Surgery, The Yuebei People’s Hospital of Shaoguan, Shaoguan, Guangdong 512025, China
2. College of Physical Education and Health, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
3. Department of Nursing Medical College, Shaoguan University, Shaoguan, Guangdong 512005, China
4. Department of Gynaecology and Obstetrics, The Qujiang District Maternal and Child Health Care Hospital, Shaoguan, Guangdong, China