Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34122168/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34122168
Full text from	free resource	Diposit Digital de la Universitat de Barcelona	http://hdl.handle.net/2445/178502
	free resource	Frontiers Media SA	https://doi.org/10.3389/fpsyt.2021.631245