| Affiliation: | 1. Department of Orthopaedic Surgery, Hokkaido University Hospital, North-15, West-7, Sapporo, Hokkaido 060-8638, Japan;2. Department of Orthopaedic Surgery, Orthopaedic Hokushin Hospital, Kikusuimotomachi 3-3, Sapporo, Hokkaido 003-0823, Japan;3. Department of Orthopaedic Surgery, Japan Community Health Care Organization Hokkaido Hospital, Nakanoshima 1-8 Sapporo, Hokkaido 062-8618, Japan;1. Department of Orthopaedic Surgery, Brigham and Women''s Hospital, Harvard Medical School, Boston, MA, USA;2. Department of Orthopaedic Surgery, Harbor UCLA Medical Center, Los Angeles, CA, USA;3. Orthopaedic Specialists of Austin, Austin, TX, USA |
