1University of California San Francisco Medical Center, San Francisco, California
E-mail address for E.C. Cheung: email@example.com
Investigation performed at the University of California San Francisco Medical Center, San Francisco, California
Disclosure: The authors indicated that no external funding was received for any aspect of this work. On the Disclosure of Potential Conflicts of Interest forms, which are provided with the online version of the article, one or more of the authors checked “yes” to indicate that the author had a relevant financial relationship in the biomedical arena outside the submitted work (http://links.lww.com/JBJSREV/A478).