The prevalence of familial hyperaldosteronism in apparently sporadic primary aldosteronism in Germany: a single center experience - Pallauf, A; Schirpenbach, C; Zwermann, O; Fischer, E; Morak, M; Holinski-Feder, E; Hofbauer, L C; Beuschlein, F; Reincke, M (Horm Metab Res, 2012)