Results
Overall, 1313 papers were screened. The search yielded only five pertinent articles (Appenice A ). Three of them investigated renal graft perfusion, accounting for a total of 53 paediatric patients and 50 adult patients. Main findings of the selected papers were reported in the Table below. The quality assessment, according to the Newcastle-Ottawa Scale, showed an high risk of bias for all of them (Appendice B ). This might be due to the small size of the cohorts selected for the studies.