The impact of a biocellulose-based repair of fetal open spina bifida on the need to untether the cord: is it time to unify techniques for prenatal repair? oleh Denise Araújo Lapa, Gustavo Yano Callado, Giulia Catissi, Lucas Trigo, Fernanda Faig-Leite, Ana Paola Arthaud Berthet Sevilla