Aquino, Priscila de Souza, Raul Feitoza Rogerio, Sabrina Ferreira da Silva, Ana Karina Bezerra Pinheiro, and Ana Kelve de Castro Damasceno. 2011. “Analysis of Scientific Production on Obstetrical Nursing in Scielo Database”. Rev Rene 12 (1). http://www.periodicos.ufc.br/rene/article/view/4188.