1. Department of Microencapsulation and Nanomaterials, Southwest Research Institute, San Antonio, Texas.
2. Biomedical Engineering Program, University of Texas at San Antonio/University of Texas Health Science Center at San Antonio, San Antonio, Texas.
3. Department of Materials Science and Engineering, University of Florida, Gainesville, Florida.
4. Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Texas.
5. Audie L. Murphy Division (Hospital) of the South Texas Veterans Health Care System, San Antonio, Texas.