Gestational age and newborn size according to parental social mobility: an intergenerational cohort study
Denise P Gigante, Bernardo L Horta, Alicia Matijasevich,
Christian Loret de Mola, Aluisio J D Barros, Ina S Santos,
Fernando C Barros, Cesar G Victora
J Epidemiol Community Health Oct 2015, 69 (10) 944-949; DOI: 10.1136/jech-2014-205377