[1] CDCP, Natl Ctr Environm Hlth, Div Environm Hazards & Hlth Effects, Hlth Studies Branch, Atlanta, GA 30333 USA
[2] CDCP, Natl Ctr Environm Hlth, Div Sci Lab, Nutr Biochem Branch, Atlanta, GA USA
[3] Russian Acad Sci, Inst Forecasting, Ctr Demog & Human Ecol, Moscow, Russia
[4] Russian Acad Adv Med Studies, Moscow, Russia
[5] US Agcy Int Dev, Moscow, Russia