A Phase 3 Randomized Study of Maribavir (MBV) Versus Investigator-Assigned Antiviral Therapy (IAT) for the Treatment (Tx) of Refractory/Resistant (R/R) Cytomegalovirus (CMV) Infection in Hematopoietic Cell Transplant (HCT) or Solid Organ Transplant (SOT) Recipients