Name	Info	Provider	Link
	free resource	Ediciones Doyma, S.L.	http://www.elsevier.es/en/linksolver/pdf/pii/S1699-258X(18)30268-7
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S1699-258X(18)30268-7
	subscription/membership/fee required	ClinicalKey	https://www.clinicalkey.com/content/playBy/pii?v=S1699-258X(18)30268-7