Childbearing in adolescence: intergenerational dejà-vu? evidence from a brazilian birth cohort - Ferraro, Alexandre Archanjo; Cardoso, Viviane Cunha; Barbosa, Aline Pires; Silva, Antonio Augusto Moura da; Sant'Anna,Marcia Kauer; Ribeiro, Valdinar Souza de; Bettiol, Heloisa; Barbieri, Marco Antonio (BMC pregnancy & Childbirth, 2013)