1. Department of Anesthesiology, Second Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China (mainland)
2. Department of Anesthesiology and Pain Treatment, Chaohu Hospital Affiliated to Anhui Medical University, Chaohu, Anhui, China (mainland)
3. Department of Anesthesiology, Women’s Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, Jiangsu, China (mainland)