Luet'ic T, Crombleholme T M, Semple J P, D'Alton M
Fetal Treatment Program, Tufts University School of Medicine, New England Medical Center, Boston, Massachuetts 02111-5542, USA.
J Ultrasound Med. 1995 Jul;14(7):533-5. doi: 10.7863/jum.1995.14.7.533.