The United States National Institutes of Health says autoimmune diseases affect an estimated five to eight percent of the country's population.
VOA: special.2010.06.15
The movie says that the world's shark population has dropped by an estimated ninety percent.
VOA: special.2009.04.03
The number of infected men, women and children is estimated at more than five and a half million -- or eleven percent of the population.
VOA: special.2010.04.28
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