Clinical, immunological, and genetic features of autoimmune primary adrenal insufficiency: observations from a Norwegian registry - Erichsen, M M; Lovas, K; Skinningsrud, B; Wolff, A B; Undlien, D E; Svartberg, J; Fougner, K J; Berg, T J; Bollerslev, J; Mella, B; Carlson, J A; Erlich, H; Husebye, E S (J Clin Endocrinol Metab, 2009)