1. Department of Microbiology, Hospital Universitario N. S. de Candelaria, Santa Cruz de Tenerife, Canary Islands, Spain
2. Research Institute, Hospital Universitario N. S. de Candelaria, Santa Cruz de Tenerife, Canary Islands, Spain
3. Department of Public Health, School of Medicine, University of La Laguna, Tenerife, Spain
4. Unitat de Microbiologia, Facultat de Medicina i Cièncias de la Salut, Universitat Rovira i Virgili, Reus, Tarragona, Spain
5. Department of Cellular Biology & Microbiology, University of La Laguna, Canary Islands, Spain