OC07.02: Clinical significance of the presence of amniotic fluid 'sludge' in asymptomatic patients at low and high risk for spontaneous preterm delivery. (September 2014) - Hatanaka, A.R.; Mattar, R.; Kawanami, T.; França, M.S.; Rolo, L.C.; Nomura, R.M.; Araujo, E.; Nardozza, L.; Moron, A.F.