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제19회 대한척추신기술학회 정기학술대회(Korea) 2021.06.26 Comparative analysis of i-Factor Bone Morphogenic Protein and Demineralized Bone Matrix in instrumented anterior or lateral lumbar interbody fusion (Sathe A, Kim SJ, Lee SH, Lee YS, Choi YS, Eun SS, Bae YS, Shin SH, Bae J)