Any tool available for overlap analysis of primary studies in an umbrella review? Excel workbook/ online tool for graphically displaying the same? Also to calculate and display Correcetd covered area (CCA)? I am perfroming an umbrella review/ metra-review and want to prepare and visually display citation matrix and heat maps of overlap by using any easy to use tool. I use SPSS and JAMOVI but do not have R coding knowledge. Please let me know. Thank You.