![Preterm birth aetiology 2004–2008. Maternal factors associated with three phenotypes: spontaneous preterm labour, preterm pre-labour rupture of membranes and medically indicated preterm birth]()
Preterm birth aetiology 2004–2008. Maternal factors associated with three phenotypes: spontaneous preterm labour, preterm pre-labour rupture of membranes and medically indicated preterm birthHenderson, Jennifer J.; McWilliam, Owen A.; Newnham, John P.; Pennell, Craig E. · Journal of Maternal-Fetal and Neonatal Medicine · 2012