Etiology (alternately "aetiology") is the study of causation. In medicine it specifically refers to the causation of diseases or pathologies. The term is also used in philosophy, physics and biology in reference to the causes of various phenomena.
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... size is 3.07.
In the town the population is spread out with 22.3% under the age of 18, 6.7% from 18 to 24, 28.0% from 25 to 44, 25.8% from 45 to 64, and 17.2% who are 65 ...