Figure 1From: Analysis of preterm deliveries below 35 weeks' gestation in a tertiary referral hospital in the UK. A case-control surveyComplications of pregnancy in spontaneous and medically indicated elective preterm deliveries (23-35 weeks' gestation) compared with spontaneous and elective term controls (≥37 weeks' gestation). HVS: high vaginal swab. PPROM: preterm premature rupture of the membranes. Significant differences: * p < 0.001; ** p < 0.05.Back to article page