P1724: QUALITY OF LIFE AND UNMET NEEDS AMONG PH-NEGATIVE MYELOPROLIFERATIVE NEOPLASM PATIENTS: RESULTS OF THE NATIONWIDE SURVEY. (23rd June 2022) - Ionova, T.; Andreevskaya, E.; Babich, E.; Bulieva, N.; Vinogradova, O.; Volodicheva, E.; Voloshin, S.; Glonina, N.; Dubov, S.; Esefieva, N.; Zinina, E.; Ivanova, M.; et al.