EP18.05: Cervical pessary and vaginal progesterone for the prevention of SPB in patients with CCI ≤ 5th percentile at routine ultrasound 11 to 13.6 weeks. (September 2016) - Rivera‐Casas, A.; Parra, G.; Rueda, A.; Diaz, I.; Barrero, A.; Parra‐Saavedra, M.A.