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About the article
Published Online: 2019-02-15
Conflict of interest: The authors declare no conflict of interest.
Authors’ contributions: CC carried out the study, drafted the manuscript and carried out the statistical analysis. GMcN, LA and DMJ conceived the project, contributed to the design of the study and helped draft the manuscript. LA helped in the statistical analysis and choice of statistical tools. All authors read and approved the final manuscript.
Funding source: This study was part of a PhD project with the University of Aberdeen, for which CC received a PhD scholarship from the University of Malta. GMcN and DMJ were supported by the Scottish Government Rural and Environment Research and Analysis Services (RERAS).