- Surgeon (Dr. Dennis Wong)
- Assess the necessity and risk of surgery - Endocrinologist
- Assess the severity of diabetes - Respirologist
- Assess the severity of sleep apnea - Dietitians
- Assess the feasibilities of diet control on weight loss - Psychiatrist
- Assess the feasibilities of using psychotherapy for weight loss - Anesthetist
- Monitor the level of anesthesia - Intensive care unit
- Provide post-operative care - Physiotherapist
- design exercise plan after surgery