Primary empty sella: why and when to investigate hypotalamic-pituitary function

Giustina, Andrea; Aimaretti, G; Bondanelli, M; Buzi, F; Cannavò, S; Cirillo, S; Colao, A; De Marinis, L; Ferone, D; Gasperi, M; Grottoli, S; Porcelli, T; Ghigo, E; Degli Uberti, E.