The trajectory of head circumference and neurodevelopment in very preterm newborns during the first two years of life: a cohort study Maria Luciana de Siqueira Mayrink; Letícia Duarte Villela; Maria Dalva Barbosa Baker Méio; Fernanda Valente Mendes Soares; Andrea Dunshee de Abranches; Sylvia Reis Gonçalves Nehab; Ana Beatriz Rodrigues Reis; Leticia Baptista de Paula Barros; Maura Calixto Cecherelli de Rodrigues; Saint-Clair Gomes Junior; Maria Elisabeth Lopes Moreira;