Clin. Vaccine Immunol.-2013-Scallan-85-94 Ciaran D. Scallan, Debora W. Tingley, Jonathan D. Lindbloom, James S. Toomey and Sean N. Tucker Clin. Vaccine Immunol. 2013, 20(1):85. DOI: 10.1128/CVI.00552-12. Published Ahead of Print 14 November 2012.