[1] Penn State Univ, Div Endocrinol Diabet & Metab, Coll Med, Hershey, PA 17033 USA
[2] Penn State Univ, Dept Publ Hlth Sci, Coll Med, Hershey, PA 17033 USA
[3] Penn State Univ, Dept Clin Nutr, Coll Med, Hershey, PA 17033 USA
[4] Thomas Jefferson Univ, Jefferson Myrna Brind Ctr Integrat Med, Philadelphia, PA 19107 USA
[5] Penn State Univ, Dept Obstet & Gynecol, Coll Med, Hershey, PA 17033 USA