Vijgen, S M C, Westerhuis, M E M H, Opmeer, B C, Visser, G H A, Moons, K G M, Porath, M M, Oei, G S, van Geijn, H P, Bolte, A C, Willekes, C, Nijhuis, J G, van Beek, E, Graziosi, G C M, Schuitemaker, N W E, van Lith, J M M, van den Akker, E S A, Drogtrop, A P, Van Dessel, H J H M, Rijnders, R J P, Oosterbaan, H P, Mol, B W J & Kwee, A 2011, ' Cost-effectiveness of cardiotocography plus ST analysis of the fetal electrocardiogram compared with cardiotocography only ', Acta Obstetricia et Gynecologica Scandinavica, vol. 90, no. 7, pp. 772-778 . https://doi.org/10.1111/j.1600-0412.2011.01138.x Acta Obstetricia et Gynecologica Scandinavica, 90(7), 772-778. Wiley-Blackwell Acta obstetricia et gynecologica Scandinavica, 90(7), 772-778. Wiley-Blackwell Acta Obstetricia et Gynecologica Scandinavica, 90(7), 772-778 Acta Obstetricia et Gynecologica Scandinavica, 90(7), 772-778. Wiley