COST-EFFICACY ANALYSIS OF GEFITINIB EFFICACY IN PATIENTS WITH NON OPERABLE NON SMALL CELL LUNG CANCER oleh S. A. Protsenko, A. V. Rudakova, F. V. Moiseyenko, E. V. Levchenko, D. E. Matsko, A. О. Ivantsov, I. I. Semenov, A. G. Ievleva, N. V. Mitushkina, A. V. Togo, A. V. Novik, E. N. Imyanitov, V. M. Moiseyenko