Cite
Lumbar spine surgery across 15 years: trends, complications and reoperations in a longitudinal observational study from Norway.
MLA
Grotle, Margreth, et al. “Lumbar Spine Surgery across 15 Years: Trends, Complications and Reoperations in a Longitudinal Observational Study from Norway.” BMJ Open, vol. 9, no. 8, Aug. 2019, p. e028743. EBSCOhost, https://doi.org/10.1136/bmjopen-2018-028743.
APA
Grotle, M., Småstuen, M. C., Fjeld, O., Grøvle, L., Helgeland, J., Storheim, K., Solberg, T. K., & Zwart, J.-A. (2019). Lumbar spine surgery across 15 years: trends, complications and reoperations in a longitudinal observational study from Norway. BMJ Open, 9(8), e028743. https://doi.org/10.1136/bmjopen-2018-028743
Chicago
Grotle, Margreth, Milada Cvancarova Småstuen, Olaf Fjeld, Lars Grøvle, Jon Helgeland, Kjersti Storheim, Tore K Solberg, and John-Anker Zwart. 2019. “Lumbar Spine Surgery across 15 Years: Trends, Complications and Reoperations in a Longitudinal Observational Study from Norway.” BMJ Open 9 (8): e028743. doi:10.1136/bmjopen-2018-028743.