Correspondence Thomas J. Buell: firstname.lastname@example.org.
INCLUDE WHEN CITING Published online August 3, 2018; DOI: 10.3171/2018.5.SPINE18636.
Disclosures Bess: research support from K2M, NuVasive, Medtronic, DePuy Synthes, ZimmerBiomet, Allosource, Orthofix, and EOS; consultant for K2M, Allosource, DePuy Synthes, Misonix, and EOS; and patent holder with K2M and Innovasis. Shaffrey: consultant for Medtronic, NuVasive, Zimmer Biomet, and K2M; and patent holder with and royalties from Medtronic, NuVasive, and Zimmer Biomet; stock holder with NuVasive. Smith: royalties from Zimmer Biomet; consultant for Zimmer Biomet, Cerapedics, NuVasive, K2M, and AlloSource; honoraria from Zimmer Biomet, NuVasive, and K2M; research support from DePuy Synthes and ISSGF; and fellowship support from NREF and AOSpine.
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