- Correspondence to Dr Shamez Ladhani, Department of Immunisation, Hepatitis and Blood Safety, Public Health England, London NW9 5EQ, UK;
- Received September 21, 2017
- Revised January 4, 2018
- Accepted February 8, 2018
- First published April 10, 2018.
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.