Article, Refereed Journal American Journal of Public Health 97.4 (April 2007): 696-702. Paul von Hippel http://ajph.aphapublications.org/doi/abs/10.2105/AJPH.2005.080754 http://ezproxy.lib.utexas.edu/login?url=http%3A//search.ebscohost.com/login.asp… Research Topic Health Care and Health Policy