Chainikom , Charinrat. “The Impact of Development in Nursing Practice on Prenatal Care for Newly Pregnant Women under the Udonthani Model Classifying Pregnancy 2022 Standards,Kut Chap District, Udon Thani Province”. Journal of Health Promotion and Environmental Health Research Health Promotion Centre 8 Udon Thani 1, no. 03 (March 22, 2024): 161–176. Accessed December 15, 2024. https://he04.tci-thaijo.org/index.php/hpc8Journal/article/view/919.