Reproductive biomedicine online, 46(6), 973-981. Elsevier Eliveld, J, vanderBles, I, van Wely, M, Meißner, A, Soufan, A T, Heijboer, A C, Repping, S, vander Veen, F & van Pelt, A M M 2023, ' The risk of hypogonadism after testicular sperm extraction in men with various types of azoospermia : a prospective cohort study ', Reproductive BioMedicine Online, vol. 46, no. 6, pp. 973-981 . https://doi.org/10.1016/j.rbmo.2023.02.003 Reproductive BioMedicine Online, 46(6), 973-981. Elsevier