About the Authors

Collaborative Group on Epidemiological Studies of Ovarian Cancer

collaborations@ceu.ox.ac.uk

Affiliation Cancer Epidemiology Unit, University of Oxford, Oxford, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

This manuscript is one of a series of papers by a group author, ‘The Collaborative Group on Epidemiological Studies of Ovarian Cancer’. Individual data from 47 separate studies have been submitted centrally by all collaborators listed in the Acknowledgments section. Each collaborator was responsible for the design of one or more of the 47 contributing epidemiological studies. All collaborators have seen this manuscript and a previous version, and their comments are incorporated here. Analyzed the data: VB CH RP GR. Wrote the first draft of the manuscript: VB CH RP GR. Contributed to the writing of the manuscript: Collaborators. ICMJE criteria for authorship read and met: VB CH RP GR. Agree with manuscript results and conclusions: Collaborators.