1 University Research Institute of Maternal and Child Health & Precision Medicine, and UNESCO Chair on Adolescent Health Care, National and Kapodistrian University of Athens, "Aghia Sophia" Children's Hospital, Athens, Greece. chrousge@med.uoa.gr.
2 Public Health Laboratories, Hellenic Pasteur Institute, Athens, Greece.
3 Laboratory of Microbiology, University Hospital of Larissa, School of Medicine, University of Thessaly, Larissa, Greece.