International Journal of Gynecology & Obstetrics, 139(3), 318-323 Hermans, F J R, Koullali, B, van Os, M A, van der Ven, J E M, Kazemier, B M, Woiski, M D, Willekes, C, Kuiper, P N, Roumen, F J M E, de Groot, C M, de Miranda, E, Verhoeven, C, Haak, M C, Pajkrt, E, Schuit, E & Mol, B W J 2017, ' Repeated cervical length measurements for the verification of short cervical length ', International Journal of Gynecology and Obstetrics, vol. 139, no. 3, pp. 318-323 . https://doi.org/10.1002/ijgo.12321 International Journal of Gynecology and Obstetrics, 139(3), 318-323. Elsevier Ireland Ltd International Journal of Gynecology & Obstetrics, 139, 3, pp. 318-323 International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics, 139(3), 318-323. Elsevier Ireland Ltd International Journal of Gynecology & Obstetrics, 139(3), 318-323. Wiley International Journal of Gynaecology and Obstetrics, 139(3), 318. Elsevier Ireland Ltd International Journal of Gynecology & Obstetrics, 139, 318-323