1. Centre of Maritime Health and Society, Institute of Public Health, Esbjerg, University of Southern Denmark
2. Faculty of Health Sciences, University de Panamá, Panamá, Rep. of Panama
3. Frederick University, School of Health Sciences, Nicosia, Cyprus
4. Caja Seguro Social, Vacamonte Rep. of Panama
5. Universidad Metropolitana de Educación Ciencia y Technología. Facultad de las Ciencias y Tecnología, Panamá, Rep. of Panama
6. Hippokration Hospital, Athens, Greece