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Subjects for an Exposure-Based Cohort Study of Lead Exposure Would

Question 17

Multiple Choice

Subjects for an exposure-based cohort study of lead exposure would be selected most appropriately from:


A) certain occupational groups such as workers who manufacture batteries.
B) the residents of a large U.S. county.
C) male Harvard alumni from 1916 to 1950.
D) All are correct.

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