When should a woman begin Pap smear screening?

Dr. Michael Petriella, Vice Chairman of the Dept. of Obstetrics and Gynecology at Hackensack University Medical Center, discusses initiating Pap smear screening.

Did you know that the Pap in Pap smear stands for Papanikolaou? George Papanikolaou invented this method for detecting cyclic hormonal changes in vaginal cells. Read more on Pap smears at Wikipedia.