kingkoiklang, sangdaun. 2021. “The Results of Development Guideline of Antenatal Care for Knowledge and Anemia in Pregnancy Women at Chumphae Hospital Antenatal Care Clinic”. Journal of Preventive Medicine Association of Thailand 11 (2):345-69. https://he01.tci-thaijo.org/index.php/JPMAT/article/view/249897.