Goldstein, Rebecca F.
Abell, Sally K.
Ranasinha, Sanjeeva
Misso, Marie L.
Boyle, Jacqueline A.
Harrison, Cheryce L.
Black, Mary Helen
Li, Nan
Hu, Gang
Corrado, Francesco
Hegaard, Hanne
Kim, Young Ju
Haugen, Margaretha
Song, Won O.
Kim, Min Hyoung
Bogaerts, Annick
Devlieger, Roland
Chung, Judith H.
Teede, Helena J.
Article History
Received: 27 February 2018
Accepted: 13 July 2018
First Online: 31 August 2018
Ethics approval and consent to participate
: This systematic review and meta-analysis includes previously published observational studies. We could not influence the design of the prior studies upon which this work is based and cannot comment on individual ethics approval or consent. Patients were not involved in the conduct of our epidemiological study, and there is no identifiable data.
: Author/Professor Boyle reports personal fees from Pfizer, outside the submitted work. The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.