Frailty and health related quality of life three months after non-metastatic colorectal cancer diagnosis in older patients: A multi-centre prospective observational study

Ellen van der Vlies, Lisette M. Vernooij, Marije E. Hamaker, Ankie M.T. van der Velden, Marianne E. Smits, Martijn Intven, Joyce M. van Dodewaard, Marijn Takkenberg, Geraldine R. Vink, Anke B. Smits, Willem Jan W. Bos, Eric P.A. van Dongen, Maartje Los, Peter G. Noordzij