More recently, we studied a group of unselected infertile patients (n = 100; divided into 3 subgroups: VAR, infections, other etiologies) and 31 fertile men, also correlating Lag values (TAC) with circulating hormones: gonadotropins, testosterone, estradiol, fT3, fT4, TSH, and prolactin (PRL) [33]. Here, PRL is linked to infection.