Authors: van den Berg, C Braat, APG Van Opstal, D Halley, DJJ Kleijer, WJ den Hollander, NS Brandenburg, H Pijpers, L Los, FJ

Citation: C. Van Den Berg et al., Amniocentesis or chorionic villus sampling in multiple gestations? Experience with 500 cases, PRENAT DIAG, 19(3), 1999, pp. 234-244