The diagnosis and treatment of primary hyperaldosteronism in Germany: results on 555 patients from the German Conn Registry - Schirpenbach, C; Segmiller, F; Diederich, S; Hahner, S; Lorenz, R; Rump, L C; Seufert, J; Quinkler, M; Bidlingmaier, M; Beuschlein, F; Endres, S; Reincke, M (Dtsch Arztebl Int, 2009)