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"Ah, testosterone, the male hormone with the bad-boy reputation. But does it really cause aggression in men? Do women also secrete testosterone in their bodies? Find out what else women need to know about male hormones."^^<http://www.w3.org/2001/XMLSchema#string>
<http://health.howstuffworks.com/sexual-health/male-reproductive-system/10-things-about-male-hormones7.htm>