Louro, Javier
Posso, Margarita
Hilton Boon, Michele
Román, Marta
Domingo, Laia
Castells, Xavier http://orcid.org/0000-0002-2528-0382
Sala, María
Article History
Received: 10 January 2019
Accepted: 25 April 2019
First Online: 22 May 2019
Competing interests
: The authors declare no competing interests.
: All procedures performed in this study were in accordance with the ethical standards of the ethics committee of Parc de Salut Mar (CEIC Parc de Salut Mar) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Neither specific patient consent nor ethics committee’s approval were required because we used published articles that were obtained from open access databases.
: The datasets analysed during the current study are publicly available from the corresponding author.
: Not applicable.
: This work was partially supported by Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQuAS) and by grants from Instituto de Salud Carlos III FEDER (grant numbers: PI15/00098 and PI17/00047). JL is core funded by the Research Network on Health Services in Chronic Diseases (RD12/0001/0015). MHB is core funded by the UK Medical Research Council (funding code: MC_UU_12017/15) and the Scottish Government Chief Scientist Office (funding code: SPHSU15). None of the funders participated in the design of the study, collection, analysis, or interpretation of data, or in writing the manuscript.