Impact of routine measurement of serum calcitonin on the diagnosis and outcome of medullary thyroid cancer: experience in 10,864 patients with nodular thyroid disorders - Elisei, R; Bottici, V; Luchetti, F; Di Coscio, G; Romei, C; Grasso, L; Miccoli, P; Iacconi, P; Basolo, F; Pinchera, A; Pacini, F (J Clin Endocrinol Metab, 1994)