1 Division of Internal Medicine, Department of Medical and Surgical Sciences, University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy. Electronic address: alice.gianstefani@gmail.com.
2 Emergency Unit of Faenza Hospital, Faenza, Italy.
3 Department of Clinical Medicine, University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy.
4 Area Critica Ospedale Privato Accreditato Villa Nigrisoli, Bologna, Italy.
5 Emergency Unit, Department of Emergency, General Surgery and Transplants, S. Orsola-Malpighi Hospital, Bologna, Italy.