1. VA Ann Arbor Healthcare System and University of Michigan Diabetes Research and Training Center, PO Box 130170, Ann Arbor, MI 48113-0170, USA,
2. Escuela de Enfermería, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul 6904411, Santiago, Chile
3. University of Illinois-Chicago, School of Public Health, 1603 West Taylor Street (MC 923), Chicago, IL 60612, USA
4. Departamento Medicina Familiar, Escuela de Medicina, Pontificia Universidad Católica de Chile, Lira 44, Santiago Centro 830023, Santiago, Chile
5. Institute of Population Health, University of Ottawa, One Stewart Street, Ottawa, Ontario K1N 6N5, Canada