Beta-2 adrenergic receptor gene polymorphisms Gln27Glu, Arg16Gly in patients with heart failure - Mansur, Alfredo José; Fontes, Rosana Seleri; Canzi, Regina Airoldi; Nishimura, Raphael; Alencar, Airlane Pereira; Lima, Antonio Carlos Pedroso de; Krieger, José Eduardo; Pereira, Alexandre Costa (BMC Cardiovascular Disorders, 2009)