Liu T, Zou S, Guo L, Niu Z, et al. Effect of Different Positions During Surgical Preparation With Combined
Spinal-Epidural Anesthesia for Elective Cesarean Delivery: A Randomized
Controlled Trial. Anesth Analg 2020 Dec 21. pii: 00000539-990000000-00029.
PMID: 33350619