Foglietta LM, Muñoz MG, Alvarado J. Copper, chromium and zinc content in human semen and its possible effect on sperm quality of fertile and infertile men in the city of Caracas, Venezuela. Ciencia [Internet]. 1 [citado 12 de febrero de 2026];6(1). Disponible en: http://www.produccioncientifica.luz.edu.ve/index.php/ciencia/article/view/8838