
These proportions are small, Dr. Shah noted, and the 10-fold difference in the number of pregnant and nonpregnant women in the analysis makes it difficult to compare their risks.
In a separate analy… [+7853 chars]

These proportions are small, Dr. Shah noted, and the 10-fold difference in the number of pregnant and nonpregnant women in the analysis makes it difficult to compare their risks.
In a separate analy… [+7853 chars]