1. Department of Orthopaedics Queen Savang Vadhana Memorial Hospital Sriracha Thailand
2. Department of Orthopaedics Rayong Hospital Rayong Thailand
3. The Orthopaedic Center Bumrungrad International Hospital Bangkok Thailand
4. Department of Orthopaedics Phramongkutklao hospital and college of medicine Bangkok Thailand
5. Department of Orthopaedics, Faculty of Medicine Chulalongkorn University Bangkok Thailand
6. Center of Excellence in Biomechanics and Innovative Spine Surgery Chulalongkorn University Bangkok Thailand
7. Department of Neurosurgery, Seoul St. Mary's Hospital, Spine Center College of medicine Seoul South Korea