Funding for this research was provided by:
European Cooperation in Science and Technology (CA15218)
Text and Data Mining valid from 2019-08-09
Received: 3 March 2019
Accepted: 26 July 2019
First Online: 9 August 2019
Ethics approval and consent to participate
: The study has been performed in accordance with the Declaration of Helsinki and has received ethical approval from the Committee of Good Practices of the European Statistical System (ETUCE) under the Directive 95/46/Parliament and the European Council of 24 October 1995 on the protection of individuals with regard to the processing of personal data and on the free movement of such data. All participants consented to the study and data publication verbally.
: Not applicable.
: The authors declare that they have no competing interests pertaining to the work.