| http://www.w3.org/ns/prov#value | - said more research was needed to assess potential effects on health and added only the ???tip of the iceberg??? has been looked at.It said the speed with which the increases in disease incidence have occurred in recent decades rules out genetic factors as the sole explanation, but said other factors such as nutrition, age and chemical exposure are difficult to identify.Time to actDimmer said: ???W
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