Center for Health Equity Research, Brown School of Public Health, Providence, RI 02912, USA; Department of Behavioral and Social Sciences, Brown School of Public Health, Providence, RI 02912, USA; Department of Epidemiology, Brown School of Public Health, Providence, RI 02912, USA. Electronic address: patricia_risica@brown.edu. Center for Health Equity Research, Brown School of Public Health, Providence, RI 02912, USA. Currently with Department of Surgery, Columbia University Medical Center, NY, New York 10032, USA. Department of Human Development and Family Studies, University of Connecticut, Storrs, CT 06269, USA. Institute for Collaboration on Health, Intervention, and Policy, University of Connecticut, Storrs, CT 06269, USA. Center for Health Equity Research, Brown School of Public Health, Providence, RI 02912, USA; Department of Behavioral and Social Sciences, Brown School of Public Health, Providence, RI 02912, USA; Department of Human Development and Family Studies, University of Connecticut, Storrs, CT 06269, USA; Institute for Collaboration on Health, Intervention, and Policy, University of Connecticut, Storrs, CT 06269, USA.