Serum FSH, LH and testosterone levels in GG, GG+TT and TT carriers. Serum FSH (upper panel), LH (middle panel) and testosterone (lower panel) levels in men stratified according to the FSHB -211 GG, GT+TT and TT genotypes. †p < 0.005, *p < 0.05, ‡p < 0.01 (Mann-Whitney test) and §p = 0.05 (ANOVA) vs. the FSHB -211 GG genotype