2.2. Inclusion and exclusion criteria
Inclusion criteria for the study were: (1) Subjects involved in the study were patients with KD who underwent surgical revascularization; (2) Comparison between different surgical strategies of myocardial revascularization; (3) At least one of the endpoints have to be included, such as graft patency, early and long-term mortality and need of interventional procedures and/or surgical re-interventions; (4) Sufficient quality data should have been provided in the original studies. Exclusion criteria for the study: (1) Case reports, conference proceedings or reviews; (2) Duplicates studies; (3) Publications with full text in languages other than English. PICOS study design was used for inclusion/exclusion criteria (Supplementary Table 1).