Birth spacing in the United States - Towards Evidence-Based Recommendations

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Paediatric and Perinatal Epidemiology


Introduction to the supplement.


Financial Disclosure: No financial or other disclosures of conflict of interests were re-ported by the authors of this paper. KAA performed this work under employment of the US federal government. JAH is supported by a Canada Research Chair in Perinatal Population Health. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. © 2018 The Authors. Paediatric and Perinatal Epidemiology Published by John Wiley & Sons Ltd