Tielemans E, van Kooij R, te Velde E R, Burdorf A, Heederik D
Lancet. 1999 Aug 7;354(9177):484-5. doi: 10.1016/s0140-6736(99)00599-1.
The effect of paternal occupational exposures on fertilising ability was investigated in 836 couples who sought in-vitro fertilisation treatment. Fertilisation rates were significantly decreased for couples with paternal pesticide exposure.