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OpenStudy (anonymous):
Epidemiology help!! 1973- 2million population (starting number) 1993- 4million (increased by 2 million in 20 years) 2013- 8million (increased by 4 million in 20 years) Death rate: 9/1000 per year (1973-2013) Birth rate is constant. Birth rate during period of 1973-2013 is ????
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