- Correspondence to Dr Charlotte A Gaydos, Department of Emergency Medicine, Division of Infectious Diseases, Johns Hopkins University, 855 North Wolfe Street, 530 Rangos Building, Baltimore, MD 21205, USA;
- Received November 21, 2012
- Revised December 18, 2012
- Accepted December 24, 2012
- First published January 26, 2013.
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