1 : Abortion 25 Nov 2021 WHO (https://www.who.int/news-room/fact-sheets/detail/abortion 出版時 URL)
2 : Ganatra B. et al., Global, regional, and subregional classification of abortions by safety, 2010-14 : estimates from a Bayesian hierarchical model. Lancet 390 (10110) : 2372-2381, 2017
3 : Center for Reproductive Rights (https://reproductiverights.org/our-issues/abortion/ 出版時 URL)
4 : 太田素子「子宝と子返し-近世農村の家族生活と子育て-」藤原書店 (2007年)