McKinley M J, Kearney L U, Nicolaides K H, Rosevear S K, Bradley R, Heron O, Gosden C M
Harris Birthright Research, Centre for Fetal Medicine, Kings College School of Medicine and Dentistry, London, England.
Am J Med Genet. 1988 Nov;31(3):697-9. doi: 10.1002/ajmg.1320310327.