O. S. Nekhlopochyn, I. G. Vasylieva, N. G. Chopyk, V. V. Verbov, I. V. Cheshuk, and M. V. Vorodi, “Evaluation of the efficacy of combined vitamin D3 and K2 therapy in reducing implant-associated complication risk and improving spinal fusion stability”, Ukr Neurosurg J, vol. 31, no. 2, pp. 10–27, Jun. 2025.