1 Department of Oncology and Hematology, Medical Oncology Unit, Central Hospital of Belcolle, Viterbo, Italy. Electronic address: fabrizio.nelli@asl.vt.it.
2 Department of Oncology and Hematology, Medical Oncology Unit, Central Hospital of Belcolle, Viterbo, Italy.
3 Clinical Trial Center, Biostatistics and Bioinformatics Unit, Scientific Direction, IRCCS Regina Elena National Cancer Institute, Rome, Italy.
4 Department of Oncology and Hematology, Microbiology and Virology Unit, Central Hospital of Belcolle, Viterbo, Italy.
5 Department of Oncology and Hematology, Molecular Biology and Covid Diagnostics, Central Hospital of Belcolle, Viterbo, Italy.