Kokaew, S., R. Wangkahad, P. Meepin, Y. Sarunyuset, and P. Apiruknapanond. “The Development of Referral Continuing Care Model for Pain Management in Advance cancer Patient”. Journal of health and health management, vol. 9, no. 1, June 2023, pp. 111-22, https://he01.tci-thaijo.org/index.php/slc/article/view/258774.