- Correspondence to Calvin Heal, Centre for Biostatistics, The University of Manchester Faculty of Biology Medicine and Health, Manchester M13 9PY, UK;
- Received December 10, 2019
- Revised July 14, 2020
- Accepted July 15, 2020
- First published September 28, 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.