*Naval Medical Research Unit San Antonio, 3650 Chambers Pass, Fort Sam Houston, TX 78234.
†University of Texas San Antonio, One UTSA Circle, San Antonio, TX 78249.
3 The views expressed in this article are those of the authors and do not necessarily reflect the official policy or positions of the Department of the Navy, Department of Defense, or the U.S. Government. The use of commercially available products does not imply the endorsement of these products or preferences to other similar products on the market. The authors have no financial interest in either the products or the products' manufacturers/distributors. No direct or indirect support was provided by any commercial interest.
