Note: Funding Information: Potential conflicts of interest. J. T. P. was an employee of Janssen, Pharmaceutical Companies of Johnson & Johnson at the time of the study. For the submitted work T. V. and M. B. received consulting fees from Janssen, Pharmaceutical Companies of Johnson & Johnson; M. B. received a research grant from Janssen Vaccines & Prevention B.V. Outside the scope of the submitted work, S. G. received personal fees from Janssen Research & Development LLC. All authors have submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Conflicts that the editors consider relevant to the content of the manuscript have been disclosed. Funding Information: Financial support. This work was supported by Janssen Vaccines & Prevention B. V., Leiden, The Netherlands. This work was also supported in part by the Office of Research and Development, US Department of Veterans Affairs.