Gonçalves, L.F., de Carvalho, H. and Galvão-Teles, A. 1981. Testicular biopsy in male sterility. I-Technic, evaluation and interpretation. Acta Médica Portuguesa. 3, 1 (Feb. 1981), 57–69. DOI:https://doi.org/10.20344/amp.3873.