PF729 LONG‐TERM PROTEASOME INHIBITION (LTPI) IN PATIENTS (PTS) WITH NEWLY DIAGNOSED MULTIPLE MYELOMA (NDMM): US MM‐6, A REAL‐WORLD (RW) STUDY TRANSITIONING FROM BORTEZOMIB (BTZ) TO IXAZOMIB (IXA)Robert M. Rifkin, Ralph V. Boccia, Stephen J. Noga et al.|HemaSphere|2019Cited by 1