1. Department of Orthopaedic Surgery, Inje University Ilsan Paik Hospital, Goyang, Korea
2. Department of Orthopedic Surgery, Hanyang University Guri Hospital, Guri, Korea
3. Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
4. Department of Orthopaedic Surgery, Mahidol University, Ramathibodi Hospital, Bangkok, Thailand
5. Department of Orthopaedic Surgery, KS Hospital, Ansan, Korea
6. Department of Orthopaedic Surgery, Bhandare Hospital, Goa, India
7. Department of Orthopaedic Surgery, Cheongju St. Mary’s Hosptial, Cheongju, Korea
8. Department of Orthopaedic Surgery, University of the Philippines, Philippine General Hospital, Manila, Philippines