Effect of diet-induced weight loss on plasma apelin and cytokine levels in individuals with the metabolic syndrome - Heinonen, M V; Laaksonen, D E; Karhu, T; Karhunen, L; Laitinen, T; Kainulainen, S; Rissanen, A; Niskanen, L; Herzig, K H (Nutr Metab Cardiovasc Dis, 2009)