Add in PDO data from GIST

[sgosline]

Another pdo dataset here: https://www.science.org/doi/10.1126/science.aao2774?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%20%200pubmed

Data does not look great, but will keep it open for tracking.