PT - JOURNAL ARTICLE AU - Roger Härtl AU - Jacobus J.C. Arts AU - Hyun W. Bae TI - Editors' Introduction: Biologics and Regenerative Medicine in Intervertebral Disc Regeneration and Spinal Fusion AID - 10.14444/8051 DP - 2021 Apr 01 TA - International Journal of Spine Surgery PG - 8--9 VI - 15 IP - s1 4099 - http://ijssurgery.com//content/15/s1/8.short 4100 - http://ijssurgery.com//content/15/s1/8.full SO - Int J Spine Surg2021 Apr 01; 15