Cross-sectional analysis of circulating tumor DNA in primary colorectal cancer at surgery and during post-surgery follow-up by liquid biopsy oleh Matteo Allegretti, Giuliano Cottone, Fabio Carboni, Ettore Cotroneo, Beatrice Casini, Elena Giordani, Carla Azzurra Amoreo, Simonetta Buglioni, Maria Diodoro, Edoardo Pescarmona, Settimio Zazza, Orietta Federici, Massimo Zeuli, Laura Conti, Giovanni Cigliana, Francesco Fiorentino, Mario Valle, Patrizio Giacomini, Francesca Spinella