Appearance of a ventricular 5-HT4 receptor-mediated inotropic response to serotonin in heart failure - Qvigstad, E; Brattelid, T; Sjaastad, I; Andressen, K W; Krobert, K A; Birkeland, J A; Sejersted, O M; Kaumann, A J; Skomedal, T; Osnes, J B; Levy, F O (Cardiovasc Res, 2005)