The expression of the F-box protein Skp2 is negatively associated with p27 expression in human pituitary tumors - Musat, M; Korbonits, M; Pyle, M; Gueorguiev, M; Kola, B; Morris, D G; Powell, M; Dumitrache, C; Poiana, C; Grossman, A B (Pituitary, 2002)