Bhatnagar Deepa, Morris Jason L, Rodriguez Martin, Centor Robert M, Estrada Carlos A, Willett Lisa L
General Internal Medicine, The University of Alabama at Birmingham, South Birmingham, AL 35294-0012, USA.
J Gen Intern Med. 2011 May;26(5):551-4. doi: 10.1007/s11606-011-1636-6. Epub 2011 Feb 8.