Comparison of value per operative time between anterior lumbar interbody fusion and lumbar disc arthroplasty: A propensity score-matched analysis. - Song, Junho; Katz, Austen; Ngan, Alex; Silber, Jeff; Essig, David; Qureshi, Sheeraz; Virk, Sohrab (Journal of Craniovertebral Junction & Spine, 2022)