. . . . . . . . . . . . "[Sex steroid hormones and their receptors such as estrogen receptor (ER) and progesterone receptor (PgR) have been widely studied for their roles in the etiology of breast cancer.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2016-02-19"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2016-05-13T12:47:42+02:00"^^ . . . . . . . . . . . "v4.0.0.0" . "v4.0.0" .