Frailty and Emergency Surgery: Results of a Systematic Review and Meta-Analysis oleh Tamas Leiner, Tamas Leiner, David Nemeth, Peter Hegyi, Peter Hegyi, Peter Hegyi, Klementina Ocskay, Klementina Ocskay, Marcell Virag, Marcell Virag, Marcell Virag, Szabolcs Kiss, Szabolcs Kiss, Mate Rottler, Mate Rottler, Mate Rottler, Matyas Vajda, Matyas Vajda, Alex Varadi, Zsolt Molnar, Zsolt Molnar, Zsolt Molnar, Zsolt Molnar