From the Department of Medicine, University of Alabama at Birmingham, Birmingham, AL
Conflicts of interest: None.
Correspondence: William M. Geisler, MD, MPH, University of Alabama at Birmingham, 703 19th St South, 242 Zeigler Research Bldg, Birmingham, AL 35294-0007. E-mail: email@example.com.
Received for publication December 9, 2013, and accepted December 16, 2013.