2006 Canadian clinical practice guidelines on the management and prevention of obesity in adults and children
Scroll down and read the chapter titled "9. Role of the health care team in the evaluation and management of obesity" (pages 51-54 in the Adobe toolbar).
Click http://www.cmaj.ca/content/suppl/2007/09/04/176.8.S1.DC1/obesity-lau-onlineNEW.pdf link to open resource.