Type 2 Diabetes

• Research Site — Concord, California, United States
• Research Site — Sacramento, California, United States
• Research Site — Denver, Colorado, United States
• Research Site — Topeka, Kansas, United States

• University of Rome Tor Vergata — Rome, Italy

• YMCA of the East Bay, Oakland, CA 94612 — Oakland, California, United States

• Diabetes Care Center. "Abel Santamaría Cuadrado" General Hospital — Pinar del Río, Provincia de Pinar del Río, Cuba

• Department of Human Nutrition, University of Copenhagen — Frederiksberg, Copenhagen, Denmark

• Shanghai Jiao Tong University School of Medicine — Shanghai, China

• Loma Linda University, School of Allied Health Professions — Loma Linda, California, United States

• Eulji University Hospital — Seoul, South Korea

Not specified

• National Institute of Gerontology, HMU — Hanoi, Vietnam
• National Institute of Gerontology — Hanoi, Vietnam