The journal "Surgery" published a report, a few days ago, that says U. S. doctors leave towels, cotton balls, sponges and other surgical stuff in the bodies of patients about 39 times a week, on average.  Doctors also operate on the wrong body part or the wrong patient about 20 times a week.

But, don't worry, the good news is that they always seem to get the bill, they send you, absolutely right to the penny....and they won't charge you for all that junk they left in you....but I'll bet the would if they could.