Individualized Correction for Maternal Weight in Calculating the Risk of Chromosomal Abnormalities with First-Trimester Screening Data - Merz, E.; Thode, C.; Eiben, B.; Faber, R.; Hackelöer, B. J.; Huesgen, G.; Pruggmaier, M.; Wellek, S. (Ultraschall in der Medizin - European Journal of Ultrasound, 2011)