Peritoneal fluid COVID-19 testing in patients with a negative nasopharyngeal swab: prospective study

Affiliations

• ¹ Molecular Mechanisms Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
• ² Bioinformatics and Biostatistics Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
• ³ Colorectal Surgery Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
• ⁴ Scientific Directorate, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
• ⁵ Genetic Epidemiology and Pharmacogenomics Unit Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.