Ruangvuthilert, P., U. Sampaojarean, and D. Borriboonhiransan. “Knowledge of Pregnant Women on Gestational Weight Gain and Associated Factors”. Thai Journal of Obstetrics and Gynaecology, vol. 29, no. 4, July 2021, pp. 208-16, doi:10.14456/tjog.2021.25.