There are two uploaded files. sample_correlation_matrix.pdf is a description of the R commands needed to reproduce the sample correlation matrix heatmap plot (Fig. 1B) in the paper.
sample_correlation_matrix.txt is an Rmarkdown file with the same contents, but this can be opened in RStudio and the code run directly from the document. I had to make the extension of the file .txt rather than .Rmd because I couldn't upload it otherwise. You'll need to change the extension back to .Rmd once you've downloaded it to use it in Rstudio.
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