Intensive perioperative glucose control does not improve outcomes of patients submitted to open-heart surgery: a randomized controlled trial - Chan, Raquel Pei Chen; Galas, Filomena Regina Barbosa Gomes; Hajjar, Ludhmila Abrahão; Bello, Carmen Narvaes; Piccioni, Marilde Albuquerque; Auler Junior, José Otávio Costa (Clinics, 2009)