Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/32975138/
	subscription/membership/fee required	Taylor & Francis	https://www.tandfonline.com/doi/full/10.1080/14756366.2020.1821676
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/32975138
DNA topoisomerases - overview and references	free resource	Guide to Pharmacology	https://www.guidetopharmacology.org/GRAC/FamilyDisplayForward?familyId=851