Correction: Association of circulating levels of total and protein-bound sphingosine 1-phosphate with osteoporotic fracture
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Song HE, Lee SH, Kim SJ, *et al*. Association of circulating levels of total and protein-bound sphingosine 1-phosphate with osteoporotic fracture. *J Investig Med* 2020; 68:1295–9. doi:10.1136/jim-2020-001322corr1.

Since the publication of this article, the author’s institution has been added to the second affiliations: ‘University of Ulsan College of Medicine’.