Caloric restriction increases serum testosterone concentrations in obese male subjects by two distinct mechanisms - Schulte, D M; Hahn, M; Oberhauser, F; Malchau, G; Schubert, M; Heppner, C; Muller, N; Gudelhofer, H; Faust, M; Krone, W; Laudes, M (Horm Metab Res, 2014)