TY JOUR TI A New Approach to the Classification of Filamemts of Rejuvenascence of Skin of Face and Neck KW filament rejuvenascence of skin KW lifting effect KW reinforcing effect KW bio-stimulation KW stimulate collagen production KW L-lactic acid JO Journal of New Medical Technologies AU Kodyakov, A.. AU Gruzdev , D.. AU Fedorov, P.. PY 2014 IS 21 PB INFRA-M Academic Publishing LLC.