TZE-HONG WONG2018-09-102018-09-101994-04https://www.researchgate.net/profile/Cheng-Kung_Cheng/publication/267868828_Preload_effect_of_bone_graft_on_instrumented_porcine_spine/links/545c82b80cf249070a7abe90.pdfhttp://scholars.lib.ntu.edu.tw/handle/123456789/308923Preload Effect of Bone Graft on Instrumented Porcine Spinejournal article