R. L. Siantar, D. Rostianingsih, M. Pangaribuan, N. H. T. Linh, and M. Maretalinia, “Socio-demographic Characteristics of Delivery by Caesarean Section of the Vietnamese Population: A Cross-sectional study”, j. info kesehat., vol. 23, no. 3, pp. 616–625, Sep. 2025.