Berger K, Billerbeck AEC, Costa EMF, Carvalho LS, Arnhold IJP, Mendonca BB. Frequency of the allelic variant (Trp8Arg/Ile15Thr) of the luteinizing hormone gene in a Brazilian cohort of healthy subjects and in patients with hypogonadotropic hypogonadism . Clinics. 2005;60(6):461-464. doi:10.1590/S1807-59322005000600006