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Fig. 1 | BMC Pregnancy and Childbirth

Fig. 1

From: Progesterone, cervical cerclage or cervical pessary to prevent preterm birth: a decision-making analysis of international guidelines

Fig. 1

sample decision tree (based on the AWMF guideline), pregnancy = singleton vs. twin, H - history, CL – cervical length in mm, CL = 0.0 – cervical opening 1-4 cm, C – cerclage, P – progesterone, Pess – pessary, noTx – no treatment, noR – no recommendation. CorP - cerclage or progesterone, P + -Pess progesterone with or without cervical pessary

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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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