RT Journal Article SR Electronic T1 Correction: Association of circulating levels of total and protein-bound sphingosine 1-phosphate with osteoporotic fracture JF Journal of Investigative Medicine JO J Investig Med FD BMJ Publishing Group Ltd SP 1261 OP 1261 DO 10.1136/jim-2020-001322corr1 VO 69 IS 6 YR 2021 UL http://hw-f5-jim.highwire.org/content/69/6/1261.abstract AB