International Federation for the Surgery of Obesity (IFSO)

Obesity Surgery Society of Australia & New Zealand

Obesity-OnLine IFSO & Austria

BeNeLux Association

Sociedad Brasileira de Cirurgia Bariatrica

Chilian Surgical Society

Czech Obesity Society

French Sociéty (SOFCO)

India (OSSI)

Italy (SICOB)

Sociedad Mexicana

Portuguese Obesity Surgery Society

Spanish Society (SECO)

Turkish Society (TOSS)

United Kingdom (BOSS)

American Society for Bariatric Surgery

Swiss Group for the Study of Morbid Obesity