1. Spanish Pneumococcal Reference Laboratory, National Center for Microbiology, Instituto de Salud Carlos III, Madrid 28220, Spain
2. Department of Genetics, Physiology, and Microbiology, Faculty of Biology, University Complutense of Madrid, Madrid 28040, Spain
3. Scientific Department, Meiji Pharma Spain, Madrid 28802, Spain
4. CIBER de Enfermedades Respiratorias (CIBERES), Madrid 28029, Spain