1. Lægehuset Rudkøbing – General Practice, Rudkøbing, Langeland, Denmark
2. Carmen y Severo Hospital – A&E, Cangas del Narcea, Asturias, Spain
3. Bamboo Senior Health Services – Geriatrics, Lima, Peru
4. Center for Research on Aging of the San Martin de Porres University – Lima, Peru
5. Carmen y Severo Hospital – Internal Medicine, Cangas del Narcea, Asturias, Spain
6. Laboratorio Clinico – Hospital Universitario Central de Asturias, Spain.