Saringcarinkul, A, P Pin-on, N Chiratthanapong, S Chuasuwan, and P Sattayopas. “Pain Severity and Pain Control Following Intracranial Surgery”. Chiang Mai Medical Journal 58, no. 4 (October 1, 2019): 199-209. Accessed July 13, 2020. https://he01.tci-thaijo.org/index.php/CMMJ-MedCMJ/article/view/227783.