An interesting article on why you should not rely on PubMed as a list of quality journals for the purposes of finding a journal to publish in, evaluating academic performance, or for literature reviews, unless the search results are restricted to MEDLINE journals only. "PubMed is a database that indexes articles from many thousands of journals, including predatory journals. As the proportion of articles from predatory and other low-quality journals increases in PubMed, the database’s value decreases.”
NCBI Databases: a critical review of Medline, Pubmed, Pubmed Central and NLM Catalog
Critical analysis of four NCBI (National Center for Biotechnology Information) databases and advice on which should and should not be used as journal whitelists (i.e. to identify high quality journals).