I came across this website infinome.me which relates SNPs to a few different diseases. On their site, if you click on a pubmed article, they give you a list of all the SNPs mentioned in that article along with the p-value (relating the SNP to the disease). Here's a screenshot:

<img alt="screenshot" src="https://i.gyazo.com/0ba94b1d515b5e0a2dea22a326e7028f.png" style="height:549px; width:1274px" />

^^ scroll to the right to see full image.

Is there an online database where I can download this kind of information, like for example if I'm interested in schizophrenia, I can get some articles with the list of SNPs they tested and their corresponding p-values?
Try [Grasp](http://grasp.nhlbi.nih.gov/Search.aspx) or [GWAS central](http://www.gwascentral.org/).