title: [Prevalence of maternal sadness and its associated factors].
authors.affiliation: Unidad Médica de Alta Especialidad, Hospital de Gineco-Pediatría 48, León, Guanajuato, Instituto Mexicano del Seguro Social. gustavo.romerog@imss.gob.mx
authors.forename: Gustavo
authors.initials: G
authors.lastname: Romero-Gutiérrez
authors.forename: Erika Marcela
authors.initials: EM
authors.lastname: Dueñas-de la Rosa
authors.forename: Claudia Araceli
authors.initials: CA
authors.lastname: Regalado-Cedillo
authors.forename: Ana Lilia
authors.initials: AL
authors.lastname: Ponce-Ponce de León