Alvin Headen Manton, K. G., Gu, X.-L., Ullian, A., Tolley, H. D., Headen, A. E., Jr., & Lowrimore, G. (2009). Long-term economic growth stimulus of human capital preservation in the elderly. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 106(50), 21080–21085. https://doi.org/10.1073/pnas.0911626106 Headen, A., & Masia, N. (2005). Exploring the potential link between medicaid access restrictions, physician location, and health disparities. American Journal of Managed Care, 11(Jan-05), SP21–26.