Quality of life and clinical outcomes of operatively treated patients with flail chest injuries: A multicentre prospective cohort study oleh Ruben J. Hoepelman, Fabrizio Minervini, Frank J. P. Beeres, Bas van Wageningen, Frank F. IJpma, Nicole M. van Veelen, Koen W. W. Lansink, Jochem M. Hoogendoorn, Mark. C. P. van Baal, Rolf H. H. Groenwold, Rolf H. H. Groenwold, Roderick M. Houwert, on behalf of the NEXT study group