@article{article25ca4e3d,
title   = {Sperm concentration and normal sperm morphology decrease and follicle-stimulating hormone level increases with age},
author = {Pasqualotto, Fabio F. and Sobreiro, Bernardo P. and Hallak, Jorge and Lucon, Antonio M. and Pasqualotto, Eleonora B.},
year = {2005},
doi = {10.1111/j.1464-410x.2005.05806.x},
journal   = {BJU International}
}