1. Gene Therapy and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, DHHS, Bethesda, MD 20892-1190.
2. Department of Community Dentistry, University of Texas Health Science Center, San Antonio, TX 78229-3900.
3. Department of Dental Diagnostic Science, University of Texas Health Science Center, San Antonio, TX 78229-3900.
4. Geriatric Research, Education, and Clinical Center, Audie L. Murphy VA Hospital, San Antonio, TX 78229-4404.