1. University of Washington, Seattle, WA, USA
2. Gachon University, Incheon, South Korea
3. Wooridul Spine Hospital, Pohang, South Korea
4. Spire Murrayfield Hospital, Edinburgh, UK
5. Center for Spine Surgery and Pain Therapy, Center for Orthopedics and Traumatology of the St. Elisabeth Group-Catholic Hospital Rhein-Ruhr, St. Anna Hospital Herne/Marien Hospital Herne University Hospital of the Ruhr University of Bochum/Marien Hospital Witten, Herne, Germany
6. Xinquiao Hospital, Third Military Medical University, Chongquing, China
7. Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing, China
8. Schön Clinic Munich Harlaching, Munich, Germany
9. Ligamenta Spine Center, Frankfurt am Main, Germany
10. Kyung Hee University Medical Centre, Seoul, South Korea
11. The University of Tokushima, Tokushima, Japan
12. The Leon Wiltse Memorial Hospital, Anyang, South Korea
13. Changhua Christian Hospital, Changhua, and Dayeh University, Changhua
14. Rhode Island Hospital, The Warren Alpert Medical School of Brown, Providence, RI, USA
15. The General Hospital of Chinese People’s Liberation Army, Beijing, China
16. Columbia Asia Hospital, Gurugram, Haryana, India
17. SKN Medical College, Pune, India
18. Foscal International Clinic, Floridablanca, Colombia
19. Mohawk Valley Orthopedics, Amsterdam, NY, USA
20. Hospital Angeles Pedregal Camino Santa Teresa, Mexico City, Mexico
21. University of Wisconsin, Maddison, WI, USA
22. O.L.V. van Lourdes Ziekenhuis, Waregem, Belgium
23. Queen Savang Vadhana Memorial Hospital, Sriracha, Chonburi, Thailand
24. Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
25. Razi Spine Clinic-Minimally Invasive Spine Surgery, Amman, Jordan
26. Weill Cornell Medical College, New York, NY, USA
27. St. Mary’s Hospital, The Catholic University of Korea, Seoul, South Korea