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APA Citation
Droeghaag, R., Schuermans, V. N. E., Hermans, S. M. M., Smeets, A. Y. J. M., Caelers, I. J. M. H., Hiligsmann, M., van Hemert, W. L. W., Evers, S., & van Santbrink, H. (2021). evidence-based recommendations for economic evaluations in spine surgery: study protocol for a Delphi consensus. BMJ open, 11(12), . http://access.bl.uk/ark:/81055/vdc_100148628643.0x00001b