1. Department of Health and Social Sciences, Regional Campus of International Excellence “Campus Mare Nostrum”School of Medicine, University of MurciaE30100Spain
2. Department of Occupational HealthMurcia Health ServiceSpain
3. Department of BiostatisticsUniversity of MurciaSpain
4. Department of BiochemistryUniversity Hospital ‘‘Virgen de la Arrixaca’’, Murcia Health ServiceSpain