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							Susumu JOYAMA
														
									Department of Orthopaedic Surgery, Osaka Medical Center of Cancer and Cardiovascular Diseases
							 
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							[in Japanese]
															
														
									Department of Orthopaedic Surgery, Osaka Medical Center of Cancer and Cardiovascular Diseases [in Japanese]
							 
- 
							[in Japanese]
														
									Department of Orthopaedic Surgery, Osaka Medical Center of Cancer and Cardiovascular Diseases
							 
- 
							[in Japanese]
															
														
									Department of Orthopaedic Surgery, Osaka Medical Center of Cancer and Cardiovascular Diseases
							 
- 
							[in Japanese]
														
									Department of Orthopaedic Surgery, Osaka Medical Center of Cancer and Cardiovascular Diseases
							 
- 
							[in Japanese]
														
									Department of Orthopaedic Surgery, Osaka Medical Center of Cancer and Cardiovascular Diseases
							 
- 
							
														Author contributions 
																These authors contributed equally: [in Japanese], [in Japanese]