Li, X., Y. Fan, S. Assanangkornchai, and E. B. McNeil. “Comparison of Socioeconomic Characteristics between Childless and Procreative Couples after Implementation of the Two-Child Policy in Inner Mongolia, China”. Journal of Health Science and Medical Research, vol. 38, no. 4, June 2020, pp. 285-9, doi:10.31584/jhsmr.2020748.