TY  - RPRT
TI  - Is there really a decrease in sperm parameters among healthy young men? A survey of sperm donations during 15 years.
AU  - A Benshushan
AU  - O Shoshani
AU  - O Paltiel
AU  - J G Schenker
AU  - A Lewin
PY  - 1997
DO  - 10.1007/bf02765840
UR  - https://pubmed.ncbi.nlm.nih.gov/9226515/
ID  - 9226515
ER  -