Proceedings of the National Academy of Sciences of the United States of America, 111(23), 8583-8588. National Academy of Sciences Yu, S C, Chan, K, Zheng, Y W, Jiang, P, Liao, G J, Sun, H, Akolekar, R, Leung, T Y, Go, A T, van Vugt, J M, Minekawa, R, Oudejans, C B M, Nicolaides, K H, Chiu, R W & Lo, Y 2014, ' Size-based molecular diagnostics using plasma DNA for noninvasive prenatal testing ', Proceedings of the National Academy of Sciences of the United States of America, vol. 111, no. 23, pp. 8583-8588 . https://doi.org/10.1073/pnas.1406103111 Proceedings of the National Academy of Sciences USA, 111, 23, pp. 8583-8 Proceedings of the National Academy of Sciences USA, 111, 8583-8