Name Info Provider Link
free resource Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S0160-4120(19)32581-4
Full Text at the institutional repository free resource Andalusian Health Repository http://hdl.handle.net/10668/14936
Full text from free resource Diposit Digital de la Universitat de Barcelona http://hdl.handle.net/2445/173236