Additional Resources More Resources – Learn More About Bariatric Surgery Websites American Society of Bariatric Surgery (ASBS) ObesityHelp Weight-Control Information Network (WIN)S 1 WIN Way Bethesda, MD 20892-3665 Phone: 1-877-946-4627 Email: email@example.com Books Gastrointestinal Surgery for Severe Obesity . Available from WIN by calling 800-WIN-8098. Understanding Adult Obesity . Available from WIN by calling 800-WIN-8098. Support Groups "From the horse's mouth"—one of the best ways to learn about bariatric surgery is to speak with people who have had it or are considering it. You'll meet both types of people at a weight loss surgery support group meeting.