In the May 1, 2012 CME Quiz (page 871), quiz questions 9 (page 873) and 10 (page 872) appeared out of order. Question 10, pertaining to Cochrane for Clinicians: Putting Evidence into Practice, should actually be question 9. Question 9, pertaining to Implementing AHRQ Effective Health Care Reviews, should actually be question 10. Based on this, the “Answers to This Issue's CME Quiz” box located at the end of Practice Guidelines (page 923) is incorrect. The answer for question 9 should be A, and the answer for question 10 should be A and C. The online version of the CME Quiz has been corrected.