The use of bone age in clinical practice – part 2 - Martin, D D; Wit, J M; Hochberg, Z; van Rijn, R R; Fricke, O; Werther, G; Cameron, N; Hertel, T; Wudy, S A; Butler, G; Thodberg, H H; Binder, G; Ranke, M B (Horm Res Paediatr, 2011)