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Full text from	free resource	HAL archives ouvertes	https://hal.archives-ouvertes.fr/hal-03432955
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34784007/
	subscription/membership/fee required	Springer	https://dx.doi.org/10.1007/s13280-021-01664-1
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34784007