METAL CONCENTRATIONS IN THE BLOOD AND TISSUES AFTER IMPLANTATION OF TITANIUM GROWTH GUIDANCE SLIDING INSTRUMENTATION СтатьяLukina E., Laka A., Kollerov M., Sampiev M., Mason P., Wagstaff P., Noordeen H., Yoon W.W., Blunn G.Spine Journal. Том 16. 2016. С. 380-388