Authors: Laura C Rodrigues; Susan M Pereira; Sergio S Cunha; Bernd Genser; Maria Yury Ichihara; Silvana C de Brito; Miguel A Hijjar; Ines Dourado; Alvaro A Cruz; Clemax Sant'Anna; Ana Luiza Bierrenbach; Mauricio L Barreto Journal: Lancet Date: 2005-08-31 Impact factor: 79.321