Name Info Provider Link
free resource Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S0007-0912(19)30776-7
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=31767144.ui
Full Text at the institutional repository free resource Andalusian Health Repository http://hdl.handle.net/10668/14741