[1] Wake Forest Univ, Bowman Gray Sch Med, Roena Kulynych Dementia Res Ctr, Winston Salem, NC 27103 USA
[2] Univ Washington, Seattle, WA 98195 USA
[3] Natl Ctr Complementary & Alternat Med, Bethesda, MD USA
[4] Univ Pittsburgh, Sch Med, Pittsburgh, PA 15260 USA