Management of patients with metastatic colorectal cancer in Lebanese hospitals and associated direct cost: a multicentre cohort studyAnna Maria Henaine, Georges Chahine, Marcel Massoud, Pascale Salameh, Sanaa Awada, Nathalie Lahoud, Edward Elias, Mansour Salem, Souheir Ballout, Daniel Hartmann, Gilles Aulagner and Xavier Armoiry