Kusamura S, Barretta F, Yonemura Y, Sugarbaker PH, Moran BJ, Levine EA, Goere D, Baratti D, Nizri E, Morris DL, Glehen O, Sardi A, Barrios P, QuĂŠnet F, Villeneuve L, GĂłmez-Portilla A, de Hingh I, Ceelen W, Pelz JOW, Piso P, GonzĂĄlez-Moreno S, Van Der Speeten K, Deraco M, Peritoneal Surface Oncology Group International (PSOGI) and the French National Registry of Rare Peritoneal Surface Malignancies (RENAPE)