1. This is the most recent one, drawing from Pierson, Bradford Hill and Newcastle-Ottawa: https://ebm.bmj.com/content/23/2/60
2. Tool endorsed by the US NIH - National Heart, Lung and Blood Institute: https://www.nhlbi.nih.gov/health-topics/study-quality-assessment-tools
3. In the supplementary files of this paper, you can find the Joanna Briggs Institute tool for the same purpose: Article Methodological quality (risk of bias) assessment tools for p...