Circulating peptide YY concentrations are higher in preterm than full-term infants and correlate negatively with body weight and positively with serum ghrelin concentrations - Siahanidou, T; Mandyla, H; Vounatsou, M; Anagnostakis, D; Papassotiriou, I; Chrousos, G P (Clin Chem, 2005)