Plasma obestatin concentrations are negatively correlated with body mass index, insulin resistance index, and plasma leptin concentrations in obesity and anorexia nervosa - Nakahara, T; Harada, T; Yasuhara, D; Shimada, N; Amitani, H; Sakoguchi, T; Kamiji, M M; Asakawa, A; Inui, A (Biol Psychiatry, 2008)