1 University of Michigan School of Public Health, Ann Arbor MI 48109-2029 USA; European Observatory on Health Systems and Policies, Brussels, Belgium. Electronic address: [email protected].
2 IE University, Calle de María de Molina, 31, 28006 Madrid, Spain.
3 European Observatory on Health Systems and Policies, Brussels, Belgium; Department of Public and Ecosystem Health, Cornell University, & European Observatory on Health Systems and Policies, Ithaca, NY, 14853 USA.
4 US Army Engineer Research and Development Center, Boston, MA.
5 University of Michigan School of Public Health, Ann Arbor MI 48109-2029 USA; US Army Engineer Research and Development Center, Boston, MA.