Proximal Junctional Kyphosis or Failure After Adult Spinal Deformity Surgery - Review of Risk Factors and Its Prevention. - Byung-Jou Lee; Sung Soo Bae; Ho Young Choi; Jin Hoon Park; Seung-Jae Hyun; Dae Jean Jo; Yongjae Cho (Neurospine, 2023)