Performance Evaluation of a Rapid Antigen Test (RAT) during Omicron Pandemic Wave in Greece, Conducted by Different Personnel, and Comparison with Performance in Previous Wave (Alp... oleh Maria A. Kyritsi, Matthaios Speletas, Varvara Mouchtouri, Evangelia Vachtsioli, Dimitrios Babalis, Olympia Kouliou, Anastasia Tsispara, Maria Tseroni, Christos Hadjichristodoulou