APLN and congestive heart failure: 28 Chong Chong KS KS Gardner Gardner RS RS Morton Morton JJ JJ Ashley Ashley EA EA McDonagh McDonagh TA TA Plasma concentrations of the novel peptide apelin are decreased in patients with chronic heart failure Plasma concentrations of the novel peptide apelin are decreased in patients with chronic heart failure Eur J Heart Fail Eur J Heart Fail 8 8 4 4 355 355 360 360 16464638 16464638 28.