How can I download the SNP genotyping information from GTEX? I am new to the field of Bioinformatics. GTEx database is great; I know how to check whether a SNP is eQtl with the online tools of GTEx. 

But my question is how to download the right data to draw a boxplot on my own. like this paper:


Please help me . I have been stuck on this for many days.
There are two types of data you can get from GTEx. The first is summary statistics, basically the slopes and p-values you see in the boxplot. You can also get expression levels for all genes measured in GTEx.

However, in order to plot boxplot by yourself, you also need genotype data. This is not publicly available because of privacy issues. In order to get it, you have to apply to it on dbGaP. I think you can find relevant information on the GTEx website.