Competing interests
MM
One of the authors (PDK) also receives grants/research funds from Allosource; consulting fees from Globus Medical, Spinal Elements, SurgAlign, Aziyo Biologics, and Allosource; and royalties from Globus, Spinal Elements, and SurgAlign. The other authors (RR, DAB, DLK, MM) declare they have no other competing interests.