Affiliation: | aSchool of Forest Resources and Environmental Science, Michigan Technological University, Houghton, MI 49931; ;bSchool of Forestry and Natural Resources, University of Georgia, Athens, GA 30602; ;cDivision of Silviculture, Taiwan Forestry Research Institute, Taipei, Taiwan; ;dJean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA 02111; and ;eDepartment of Genetics, University of Georgia, Athens, GA 30602 |