Fig. 2From: Allogeneic stem-cell transplantation for multiple myeloma: a systematic review and meta-analysis from 2007 to 2017Individual and pooled weighted incidence of overall survival (OS) at 1 year (a), 2 years (b), 3 years (c), and 5 years (d), stratified by transplantation period. Effect size (ES) is odds ratio or relative risk depending on the studyBack to article page