1. Universidade Nova de Lisboa, Faculdade de Ciências e Tecnologia, Centro de Recursos Microbiológicos, Caparica, Portugal
2. National Institute of Health, Department of Infectious Diseases, Lisbon, Portugal
3. Paediatric Hospital David Bernardino, Luanda, Angola
4. University of Ulm, Institute of Medical Microbiology and Hygiene, Ulm, Germany