Am Fam Physician. 2011;83(4):359
Correction
In the CME Quiz (January 1, 2011, page 31), the expiration date for submitting this quiz for CME credit hours was incorrectly listed as January 31, 2011 in the right-hand column of page 31 and on the mail-in quiz card. The correct expiration date for this CME Quiz should have been listed as January 31, 2012.