1. Department of Orthopaedic Surgery, Inje University Ilsan Paik Hospital, Goyang, Korea
2. Department of Preventive Medicine, Institute for Evidence-based Medicine, Korea University College of Medicine, Seoul, Kore
3. Department of Orthopaedic Surgery, Veterans Health Service Medical Center, Seoul, Korea
4. Department of Orthopaedic Surgery, Bhandare Hospital, Panaji, India
5. Department of Orthopaedic Surgery, Army General Hospital, Bonifacio, Philippines