1. Infectious Diseases and Tropical Medicine Division Complejo Hospitalario Universitario Insular Materno Infantil Las Palmas de Gran Canaria Spain
2. Department of Medical and Surgical Sciences University of Las Palmas de Gran Canaria Las Palmas de Gran Canaria Spain
3. Pediatric Division Complejo Hospitalario Universitario Insular Materno Infantil Las Palmas de Gran Canaria Spain
4. University of Zambeze Beira Mozambique
5. Department of Quantitative Methods in Economics and Management University of Las Palmas de Gran Canaria Las Palmas de Gran Canaria Spain