Calcitonin measurement in aspiration needle washout fluids has higher sensitivity than cytology in detecting medullary thyroid cancer: a retrospective multicentre study - Trimboli, P; Cremonini, N; Ceriani, L; Saggiorato, E; Guidobaldi, L; Romanelli, F; Ventura, C; Laurenti, O; Messuti, I; Solaroli, E; Madaio, R; Bongiovanni, M; Orlandi, F; Crescenzi, A; Valabrega, S; Giovanella, L (Clin Endocrinol, 2014)