Retrospective Registration and Completer-Only Analysis Limit Confirmatory Claims of SRAM Superiority in Cervical Spondylosis [Letter]

Jin Yan,1,* Panqi Yang,2,* Boyan Su31Clinical Cognitive Neuroscience, Advanced Occupational Therapy, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, 606-8507, Japan; 2State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, 100084, People’s Republic of China; 3Department of Neurosurgery, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua Medicine, Tsinghua University, Beijing, 102218, People’s Republic of China*These authors contributed equally to this workCorrespondence: Boyan Su, Department of Neurosurgery, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua Medicine, Tsinghua University, No. 168 Litang Road, Changping District, Beijing, 102218, People’s Republic of China, Tel +86 10 5611 9530, Email su-by22@mails.tsinghua.edu.cn