Impact of exhaled breath acetone in the prognosis of patients with heart failure with reduced ejection fraction (HFrEF). One year of clinical follow-up - Braga, Fabiana G. Marcondes; Batista, Guilherme L; Gutz, Ivano Gebhardt Rolf; Saldiva, Paulo Hilário Nascimento; Mangini, Sandrigo; Issa, Victor S; Ferreira, Silvia Moreira Ayub; Bocchi, Edimar Alcides; Pereira, Alexandre Costa; Bacal, Fernando (PLOS ONE, 2016)