Cyclical Cushing syndrome presenting in infancy: an early form of primary pigmented nodular adrenocortical disease, or a new entity? - Gunther, D F; Bourdeau, I; Matyakhina, L; Cassarino, D; Kleiner, D E; Griffin, K; Courkoutsakis, N; Abu-Asab, M; Tsokos, M; Keil, M; Carney, J A; Stratakis, C A (J Clin Endocrinol Metab, 2004)