Effects of androstenedione-herbal supplementation on serum sex hormone concentrations in 30- to 59-year-old men. - Brown,G.A.; Vukovich,M.D.; Martini,E.R.; Kohut,M.L.; Franke,W.D.; Jackson,D.A.; King,D.S. (Int J Vitam Nutr Res, 2001)