Real-world effectiveness of bortezomib maintenance following VMP induction in transplant-ineligible multiple myeloma: a target trial emulation study. - Lee JY; Choi S; Jung S; Park SS; Kim JS; Shin SH; Jeon YW; Yahng SA; Lee JJ; Kim HJ; Lee GW; Eom HS; et al. (Annals of hematology, 2026)