Birth Control Pills May Fail In Women With Certain Genetic Variant
BOSTON (CBS) -- While birth control pills are one of the most effective ways to prevent pregnancy, they don't work 100 percent of the time. The small failure rate was largely thoug…
BOSTON (CBS) -- While birth control pills are one of the most effective ways to prevent pregnancy, they don't work 100 percent of the time. The small failure rate was largely thoug…