The GOAT-ghrelin system is not essential for hypoglycemia prevention during prolonged calorie restriction - Yi, C X; Heppner, K M; Kirchner, H; Tong, J; Bielohuby, M; Gaylinn, B D; Müller, T D; Bartley, E; Davis, H W; Zhao, Y; Joseph, A; Kruthaupt, T; Ottaway, N; Kabra, D; Habegger, K M; Benoit, S C; Bidlingmaier, M; Thorner, M O; Perez-Tilve, D; Tschöp, M H; Pfluger, P T (PLoS One, 2012)