1. The First School of Clinical Medicine of Gansu University of Chinese Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu Province, China
2. Department of Thoracic Surgery, The 940th Hospital of Joint Logistics Support Force of Chinese People’s Liberation Army, Lanzhou, Gansu Province, China
3. Department of Anesthesiology, Hunan Children’s Hospital, Changsha, Hunan Province, China
4. Medical College of Northwest Minzu University, Northwest Minzu University, Lanzhou, Gansu Province, China