- Correspondence to Dr. Mark P Purdue, Occupational and Environmental Epidemiology, National Cancer Institute Division of Cancer Epidemiology and Genetics, Rockville, MD 20850, USA;
- Received June 28, 2018
- Revised December 21, 2018
- Accepted January 9, 2019
- First published February 13, 2019.
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.