Article info
Methodology
Original article
Comparison of gestational dating methods and implications for exposure–outcome associations: an example with PM2.5 and preterm birth
- Correspondence to Dr Kristen Rappazzo, U.S. EPA/ORD/NHEERL/EPHD, 109 T.W. Alexander Dr, Mail Code: 58C, Research Triangle Park, NC 27711, USA; Rappazzo.kristen{at}epa.gov
Citation
Comparison of gestational dating methods and implications for exposure–outcome associations: an example with PM2.5 and preterm birth
Publication history
- Received May 9, 2016
- Revised September 27, 2016
- Accepted October 10, 2016
- First published October 25, 2016.
Online issue publication
January 13, 2017
Article Versions
- Previous version (25 October 2016).
- You are viewing the most recent version of this article.
Request permissions
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.
Copyright information
Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/