- Correspondence to Sandra Dudareva-Vizule, Department for Infectious Disease Epidemiology, HIV/AIDS, STI and Bloodborne Infections Unit, Robert Koch Institute, DGZ-Ring 1, Berlin 13086, Germany;
- Received November 14, 2012
- Revised June 19, 2013
- Accepted July 21, 2013
- First published August 6, 2013.
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