Vincenzo Fazio, Giuseppe Damiano, Vincenzo Davide Palumbo, Gabriele Spinelli, Antonio Scio, Giovanni Tomasello, Antonio Marrazzo, Salvatore Buscemi and Attilio Ignazio Lo Monte, “An unexpected surprise at the end of a ‘Quiet’ cholecystectomy”, Ann Ital Chir, vol. 83, no. 3, pp. 265–268, May 2012.