- Correspondence to Dr Clifton O Bingham III, Divisions of Rheumatology and Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins University, 5200 Eastern Avenue, Mason F Lord Center Tower, Baltimore, MD 21224, USA;
- Received August 9, 2013
- Revised November 12, 2013
- Accepted December 10, 2013
- First published January 21, 2014.
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