Dada, O.A., Adetoye, M.O. and Afolayan, J.M. 2026. Perioperative blood loss in spine surgery: quantification of visible and hidden blood loss and associated factors in a Nigerian teaching hospital . International Journal of Advances in Medicine. 13, 6 (Oct. 2026), 342–351. DOI:https://doi.org/10.18203/2349-3933.ijam20263713.