preferred_name: Refractory Polycythemia Vera, Post-Polycythemic Myelofibrosis Phase
preferred_name_lc: refractory polycythemia vera, post-polycythemic myelofibrosis phase
label: Refractory Polycythemia Vera, Post-Polycythemic Myelofibrosis Phase
label_lc: refractory polycythemia vera, post-polycythemic myelofibrosis phase