Reference intervals for aldosterone, renin, and the aldosterone-to-renin ratio in the population-based Study of Health in Pomerania (SHIP-1) - Hannemann, A; Friedrich, N; Ludemann, J; Volzke, H; Rettig, R; Peters, J; Reincke, M; Doring, A; Nauck, M; Wallaschofski, H (Horm Metab Res, 2010)