A Machine Learning-Based Web Tool for the Severity Prediction of COVID-19 oleh Avgi Christodoulou, Martha-Spyridoula Katsarou, Christina Emmanouil, Marios Gavrielatos, Dimitrios Georgiou, Annia Tsolakou, Maria Papasavva, Vasiliki Economou, Vasiliki Nanou, Ioannis Nikolopoulos, Maria Daganou, Aikaterini Argyraki, Evaggelos Stefanidis, Gerasimos Metaxas, Emmanouil Panagiotou, Ioannis Michalopoulos, Nikolaos Drakoulis