Published on in Vol 9, No 1 (2020): January
1 Department of Hygiene, Epidemiology, and Medical Statistics, Medical School, National and Kapodistrian University of Athens, Athens, Greece
2 International Medicine-Health Crisis Management, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
3 Programs of Development, Social Support, and Medical Cooperation (PRAKSIS), Athens, Greece
4 see Acknowledgments, Athens, Greece
5 Department of Primary Health Care, General Practice, and Health Services Research, Medical School of Aristotle University, Thessaloniki, Greece
6 Environmental Microbiology Unit of Public Health, Medical School, University of Patras, Patra, Greece
7 Department of Hygiene and Epidemiology, Medical Faculty, University of Thessaly, Larisa, Greece
8 Department of Gastroenterology, Laiko General Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
*these authors contributed equally