- Correspondence to Dr Brandon W Higgs, Translational Sciences, MedImmune, One MedImmune Way, Gaithersburg, MD 20878, USA; or Dr Yihong Yao, Translational Sciences, MedImmune LLC, One MedImmune Way, Gaithersburg, MD 20878, USA;
- Accepted June 13, 2011
- First published July 28, 2011.
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