| http://www.w3.org/ns/prov#value | - rends in the US, including the findings of the most comprehensive study in that country: the Massachusetts Male Ageing Study, which found that the ED affects up to 60% of men over the age of 40.CausesThe study showed that ED has a variety of causes, including high cholesterol, diabetes, and a variety of lifestyle factors, such as stress and smoking, with between 5% and 15% of men reporting complet
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