Fabbian F, De Giorgi A, Pala M, Volpato S, Portaluppi F, Zuliani G, Manfredini R. Predictive value of admission N-terminal pro-B-type natriuretic peptide and renal function in older people hospitalized for dyspnoea. Dis Markers. 2013;35(6):735–40. PMID: 24324290; PMCID: PMC3845254.