Agarwal Rajender, Hecht Todd E H, Lazo Myra C, Umscheid Craig A
Center for Evidence-Based Practice, University of Pennsylvania Health System, Philadelphia, PA 19104, USA.
Surg Obes Relat Dis. 2010 Mar 4;6(2):213-20. doi: 10.1016/j.soard.2009.11.018. Epub 2009 Dec 16.