Perceptions and practices surrounding the perioperative management of frail emergency surgery patients: a WSES-endorsed cross-sectional qualitative survey oleh Mallaika Viswanath, Darja Clinch, Marco Ceresoli, Jugdeep Dhesi, Mario D’Oria, Belinda De Simone, Mauro Podda, Salomone Di Saverio, Federico Coccolini, Massimo Sartelli, Fausto Catena, Ernest Moore, Deepa Rangar, Walter L. Biffl, Dimitrios Damaskos