Feb 22, 2013 1:03 PM by NBC News
More is not always better when it comes to medical tests.
Several medical societies have released lists of tests that patients don't need, like CT scans for kids with minor head injuries. Doctors say the scans expose to children to radiation and are costly.
Also on the list -- annual pap smears for women age 30 to 65. Tests given every three years are just as effective.
Finally, doctors say doctors should not schedule a C-section before 39 weeks of pregnancy. Studies show babies born before that time face an increased risk for learning disabilities and complications.
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