[1] Tufts Univ, Jean Mayer USDA Human Nutr Res Ctr Aging, Energy Metab Lab, Boston, MA 02111 USA
[2] Univ New Hampshire, Dept Agr Nutr & Food Syst, 107 Kendall Hall,129 Main St, Durham, NH 03824 USA
[3] Tufts Univ, Friedman Sch Nutr Sci & Policy, Boston, MA 02111 USA
[4] Tufts Univ, Sch Arts & Sci, Dept Community Hlth, Medford, MA USA