REDISCOVER guidelines for borderline-resectable and locally advanced pancreatic cancer: management algorithm, unanswered questions, and future perspectives by Boggi, U, Kauffmann, EF, Napoli, N, Barreto, SG, Besselink, MG, Fusai, GK, Hackert, T, Hilal, MA, Marchegiani, G, Salvia, R, Shrikhande, SV, Truty, M, Werner, J, Wolfgang, C, Bannone, E, Capretti, G, Cattelani, A, Coppola, A, Cucchetti, A, De Sio, D, Di Dato, A, Di Meo, G, Fiorillo, C, Gianfaldoni, C, Hidalgo Salinas, C