Management of Asymptomatic Sporadic Nonfunctioning Pancreatic Neuroendocrine Neoplasms (ASPEN) ≤2 cm: Study Protocol for a Prospective Observational Study oleh Stefano Partelli, John K. Ramage, Sara Massironi, Alessandro Zerbi, Hong Beom Kim, Patricia Niccoli, Francesco Panzuto, Luca Landoni, Ales Tomazic, Toni Ibrahim, Gregory Kaltsas, Emilio Bertani, Alain Sauvanet, Eva Segelov, Martyn Caplin, Jorgelina Coppa, Thomas Armstrong, Martin O. Weickert, Giovanni Butturini, Stefan Staettner, Florian Boesch, Mauro Cives, Carol Anne Moulton, Carol Anne Moulton, Jin He, Andreas Selberherr, Orit Twito, Antonio Castaldi, Claudio Giovanni De Angelis, Sebastien Gaujoux, Hussein Almeamar, Andrea Frilling, Emanuel Vigia, Colin Wilson, Francesca Muffatti, Raj Srirajaskanthan, Pietro Invernizzi, Andrea Lania, Wooil Kwon, Jacques Ewald, Maria Rinzivillo, Chiara Nessi, Lojze M. Smid, Andrea Gardini, Marina Tsoli, Edgardo E. Picardi, Olivia Hentic, Daniel Croagh, Christos Toumpanakis, Davide Citterio, Emma Ramsey, Barbara Mosterman, Paolo Regi, Silvia Gasteiger, Roberta E. Rossi, Valeria Smiroldo, Jin-Young Jang, Massimo Falconi