Piamanan, P., W. Samuthtai, P. Janjenjob, A. Sanlee, P. Chamnankitvanit, W. Lukkraisorn, N. Meelarp, and P. Tianwibool. “Impact of transportation by Helicopter Emergency Medical Services (HEMS) to 24-hours mortality in severe traumatic brain injury”. Journal of Nakornping Hospital, vol. 16, no. 1, Mar. 2025, pp. 108-20, https://he01.tci-thaijo.org/index.php/jnkp/article/view/272520.