Postoperative Delirium after elective and emergency surgery: analysis and checking of risk factors. A study protocol oleh Gagliardi Stefano, Franceschi Claudio, Di Nino Gianfranco, De Cataldis Angelo, Chattat Rabbih, Catena Fausto, Ansaloni Luca, Agnoletti Vanni, Melotti Rita, Potalivo Antonella, Taffurelli Mario