Kumwong , Kamolwan, Thanawut kanpakdee, and Kittipong Sukunnee. 2021. “Factors Associated With Service of Non-Communicable Clinics in Public Hospitals During Coronavirus Disease 2019 Outbreak, Region 4, 2020”. Journal of Medical and Public Health Region 4 11 (2). Saraburi,Thailand:13-27. https://he01.tci-thaijo.org/index.php/JMPH4/article/view/251489.