- Correspondence to Dr Carina S B Tyrrell, MRC Epidemiology Unit, University of Cambridge, Cambridge CB2 0SL, UK;
- Received June 11, 2020
- Revised August 28, 2020
- Accepted October 19, 2020
- First published December 17, 2020.
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.