Quadratus lumborum block and transversus abdominis plane block in laparoscopic nephrectomy: a meta-analysis

For each domain a judgment of either ‘no concerns’, ‘some concerns’ or ‘major concerns’ are established. Finally,
a summary of all domain judgments is made at the end as having either ‘very low’, ‘low’, ‘moderate’ or ‘high’
confidence rating (Supplementary Table 1)