KRAS and BRAF mutations in circulating tumour DNA from locally advanced rectal cancer oleh Francesco Sclafani, Ian Chau, David Cunningham, Jens C. Hahne, George Vlachogiannis, Zakaria Eltahir, Andrea Lampis, Chiara Braconi, Eleftheria Kalaitzaki, David Gonzalez De Castro, Andrew Wotherspoon, Jaume Capdevila, Bengt Glimelius, Noelia Tarazona, Ruwaida Begum, Hazel Lote, Sanna Hulkki Wilson, Giulia Mentrasti, Gina Brown, Diana Tait, Jacqueline Oates, Nicola Valeri