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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: Semin Fetal Neonatal Med. 2016 Jan 14;21(2):106–112. doi: 10.1016/j.siny.2015.12.009

Fig. 4.

Fig. 4

Cervical remodeling. HPA axis, hypothalamic–pituitary–adrenal axis; PPROM, preterm premature rupture of membranes; PTL, preterm labor; sPTB, spontaneous preterm birth.