1. Institute of Infectious Diseases and Public Health
2. Department of Human Microbiology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
3. Department of General Surgery, Istituto Nazionale Riposo e Cura Anziani, Istituto di Ricovero e Cura a Carattere Scientifico, University of Ancona
4. Biotechnology Centre, Research Department, Istituto Nazionale Riposo e Cura Anziani, Istituto di Ricovero e Cura a Carattere Scientifico, Ancona, Italy
5. Laboratoires Biologiques Arval SA, Conthey, Switzerland