Suleesathira, P. “Comparison Between Monitored Anesthesia Care Combine With Fentanyl under Ilioinguinal and Iliohypogastric Nerve Block and Spinal Anesthesia for Inguinal Herniorrhaphy in Saraburi Hospital”. Srinagarind Medical Journal, vol. 34, no. 3, May 2019, pp. 256-62, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/187768.