Ariyanuchitkul, Thidarat. 2022. “Preoperative Risk Factors of Hypotension after Spinal Anesthesia for Elective Cesarean Delivery in Maharat Nakhon Ratchasima Hospital”. Thai Journal of Anesthesiology 48 (3):241-48. https://he02.tci-thaijo.org/index.php/anesthai/article/view/258560.