Kavoussi PK, Machen GL, Gilkey MS, Chen SH, Kavoussi KM, Esqueda A, Wininger JD, Barsky M, Kavoussi SK. Converting Men From Clomiphene Citrate to Natesto for Hypogonadism Improves Libido, Maintains Semen Parameters, and Reduces Estradiol. Urology. 2021 Feb; 148:141-144.