| http://www.w3.org/ns/prov#value | - But men using a mobile for more than four hours a day had average sperm counts of 66 million sperm per milliliter, 48 per cent motility and just 21 per cent normal forms.Researchers speculated that it could be electromagnetic radiation from mobiles.But other researchers suggested the difference could be down to other factors such as obesity, stress, or diet.
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