Sociodemographic, Clinical, and Therapeutic Characterization of Multiple Myeloma Patients (CharisMMa Study) with Symptomatic Relapse and/or Refractory Disease: An Observational, Multicenter Study in Portugal. - Bergantim, Rui; Freitas, José Guilherme; Gonçalves, Cristina; Martins, Helena; Marques, Herlander; Coelho, Henrique; Seabra, Patrícia; Roque, Adriana; Tavares, Márcio; Pinto, Pedro; Francisco, Ana Rita; Tato, Joana; et al. (Hematology Reports, 2026)