Fig. 4From: Efficacy of mesenchymal stem cell therapy in systolic heart failure: a systematic review and meta-analysisEffect of MSCs versus placebo on readmission: RR of the readmission (a), RR in subgroup of donor source (b), RR in subgroup of tissue origin (c) and RR in subgroup of delivery approach (d) and RR in subgroup of preservation (e)Back to article page