A Pap test a day for 21 years — meet a medical hero

Have you ever thought about the origin of the pap test? Admittedly, most people would prefer not to think about pap tests at all, so spare a thought for the woman who endured a vaginal test every day for more than 20 years. So, why on earth would this woman subject herself to such a thing? How did her doctor husband get all the credit? And what groundbreaking medical discoveries can be traced back to her sacrifice?