Question

Maternal cigarette smoking during pregnancy is thought to account for
a. 90 percent of the problem of low birth weight in the United States.
b. 35 percent of the problem of perinatal death each year in the United States.
c. 15 percent of the problem of maternal malnutrition during pregnancy in the United States.
d. 5 percent of the problem of perinatal death each year in the United States.

Answer

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