Read the case at http://jama.ama-assn.org/cgi/content/full/2009.1502 and take the quiz below to find out how your approach compares with others. For the correct answer and discussion, read the Clinical Crossroads article by Marc L. Schermerhorn, MD, in the November 11, 2009, issue of JAMA. Please send comments or suggestions to replies{at}jama-archives.org.