TY JOUR TI FELINE PANLEUKOPENIA ETIOLOGY AND TREATMENT AT THE VETSOVET VETERINARY CLINIC IN NOVOKUZNETSK KW cats KW disease KW panleukopenia KW therapy KW analysis KW treatment JO Vestnik of Omsk SAU AU PERVENETSKAYA, M.V. AU FOMENKO, L.V. AU FOMENKO, L.V. PY 2026 IS 61 PB FSBEI HE Omsk SAU