1 Wiesbaden Institute for Healthcare Economics and Patient Safety, RheinMain University of Applied Sciences, Wiesbaden, Germany.
2 Alicante-Sant Joan Healthcare District, Alicante, Spain.
3 Miguel Hernandez University, Elche, Spain.
4 NOVA National School of Public Health, Public Health Research Centre, Comprehensive Health Research Centre, CHRC, NOVA, University Lisbon, Lisbon, Portugal.