Ritruechai, S., J. Chanphet, K. Tewtong, and S. Xharoenchai. “The Study of the Publics’ Perception on the Importance of Primary Care Cluster Services”. Kuakarun Journal of Nursing, vol. 26, no. 1, June 2019, pp. 121-33, https://he01.tci-thaijo.org/index.php/kcn/article/view/167081.