Science Citation Index Expanded™ (SciSearch®), Journal Citation Reports/Science Edition, InCites, Index to Scientific Reviews®, Biochemistry & Biophysics Citation Index®, Biotechnology Citation Index®, ISI Alerting Service, Prous Science Integrity, BIOSIS, BIOSIS Previews, BIOSIS Reviews Reports and Meetings, MEDLINE/PubMed/Index Medicus, Scopus, EMBASE, Chemical Abstracts Service/SciFinder, Cambridge Scientific Abstracts (CSA)/ProQuest, Scilit, ChemWeb, Google Scholar, BIOBASE, MediaFinder®-Standard Periodical Directory, Genamics JournalSeek, PubsHub, Index Copernicus, J-Gate, CNKI Scholar, Suweco CZ, TOC Premier, EBSCO, British Library, Ulrich's Periodicals Directory, JournalTOCs, QOAM, ERA 2018 and Dimensions.