Periodontal treatment during pregnancy decreases the rate of adverse pregnancy outcome: a controlled clinical trial - Sant'ana, Adriana Campos Passanezi; Campos, Marilene R. de; Passanezi, Selma Campos; Rezende, Maria Lúcia Rubo de; Greghi, Sebastião Luiz Aguiar; Passanezi, Euloir (Journal of Applied Oral Science, 2011)