- Correspondence to Marta Checchi, Blood Safety, Hepatitis, Sexually Transmitted Infections (STI) and HIV Service, National Infection Service, Public Health England, London NW9 5EQ, UK;
- Received July 2, 2018
- Revised November 1, 2018
- Accepted November 29, 2018
- First published February 5, 2019.
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