title: Factors associated with smoking in pregnancy.
authors.affiliation: Hospital de Alvorada, Fundação Universitária de Cardiologia, Porto Alegre, RS, Brazil. giordanamotta@yahoo.com.br
authors.forename: Giordana de Cássia Pinheiro
authors.initials: Gde C
authors.lastname: da Motta
authors.forename: Isabel Cristina
authors.initials: IC
authors.lastname: Echer
authors.forename: Amália de Fátima
authors.initials: Ade F
authors.lastname: Lucena