Online Appendices
- Appendix 1: Tables of codes used to ascertain abortions in Ontario, Canada, and livebirths and male:female (M:F) ratios, according to maternal birthplace and the sex of the previous liveborn sibling(s)
- Appendix 2: Livebirths and male:female (M:F) ratios, according to maternal birthplace and the sex of the previous liveborn sibling(s). Data are stratified by whether there was at least one recorded induced abortion between the previous livebirth and the c