TY  - RPRT
TI  - Declining sperm counts? More research is needed.
AU  - P Jouannet
AU  - J Auger
DO  - 10.1111/j.1439-0272.1996.tb02803.x
UR  - https://pubmed.ncbi.nlm.nih.gov/9021038/
ID  - 9021038
ER  -