Functional and structural consequences of a novel point mutation in the CYP21A2 gene causing congenital adrenal hyperplasia: potential relevance of helix C for P450 oxidoreductase-21-hydroxylase interaction - Riepe, F G; Hiort, O; Grötzinger, J; Sippell, W G; Krone, N; Holterhus, P M (J Clin Endocrinol Metab, 2008)