PREDICTORS OF COMPLICATIONS AND UNFAVORABLE OUTCOMES OF MINIMALLY INVASIVE SURGERY TREATMENT IN ELDERLY PATIENTS WITH DEGENERATIVE LUMBAR SPINE PATHOLOGIES (CASE SERIES) Article Klimov V., Evsyukov A., Amelina E., Ryabykh S., Simonovich A. Frontiers in Surgery. Frontiers Media S.A.. Vol. 9. 2022.