The datasets used in the analysis are all available at their respective repositories; please see Tables S1-S3 for a list of accession numbers.
The core code to run the meta-analysis and various subgroup analyses is deposited here, or can be found on BitBucket at: https://bitbucket.org/khatrilab/meta-analysis-comparison-code/.
The cardiomyopathy data (smallest object) is available here. The other data objects are quite large (~1gb) and are available on request.