Low free testosterone is associated with hypogonadal signs and symptoms in men with normal total testosterone levels: results from the European Male Ageing Study. Issue 1 (December 2015) - Antonio, Leen; Wu, Frederick; O'Neill, Terrence; Pye, Stephen; Carter, Emma; Finn, Joseph; Laurent, Michaël; Huhtaniemi, Ilpo; Rutter, Martin; Rastrelli, Giulia; Forti, Gianni; Bartfai, Gyorgy; et al.