1. Hospital ‘Delfina Torres de la Concha’ Esmeraldas Esmeraldas Province Ecuador
2. Laboratorio de Investigaciones FEPIS Quinindé Esmeraldas Province Ecuador
3. Clinical Sciences Liverpool School of Tropical Medicine Liverpool UK
4. Asthma and Allergic Diseases Center University of Virginia Charlottesville VA USA
5. Department of Environmental Health Sciences Mailman School of Public Health Columbia University New York NY USA
6. Centro de Investigaciones en Enfermedades Infecciosas Pontificia Universidad Católica del Ecuador Quito Ecuador
7. Institute of Infection and Immunity St George's University of London London UK