Same-day endoscopic retrograde cholangiopancreatography after transduodenal endoscopic ultrasound-guided needle aspiration: do we need to be cautious? - Di Matteo, F; Shimpi, L; Gabbrielli, A; Martino, M; Caricato, M; Esposito, A; De Cicco, M L; Coppola, R; Costamagna, G (Endoscopy, 2006)