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Pooled hazard ratios (HRs) and 95% CIs for post-transplantation end points. 7/8 or 6/8 HLA matching versus 8/8 HLA matching; 9/10 or 8/10 HLA matching versus 10/10 HLA matching. N0, number of studies; N1, number of patients as the case; N2, number of patients as the control; NA, not available.
