Tags: ahsctautologous hematopoietic stem cell transplantautologous stem cell transplantationblood cancercancercmicohort studycumulative incidencehaematopoietic stem cell transplantationhematologic cancerhematologic second primary malignancyhematologyHSCTMMmortalitymultiple myelomamyelomaobservational cohort studyoncologyretrospectiveretrospective cohort studysecond primary malignancyspmstem cell transplantstem cell transplantation