ERRATUM
Volume 58, no. 11, p. 6704–6709, 2014. Page 6704: The following sentence should appear at the end of the abstract. “(This study is registered at ClinicalTrials.gov under identifier NCT01657552.)”
Page 6708: The second paragraph of the Acknowledgments section should read as follows. “This research (ClinicalTrials.gov identifier NCT01657552) was sponsored by GlaxoSmithKline, Inc. M. B. Wire, J. Kleha, and D. Theodore were employees of GlaxoSmithKline at the time of the study.”