By Catherine Fredouille, MD, Part-time Hospital Practitioner, Fetal Placentology Unit, Hopital de La Timone, Marseille. Consultant in Fetopathology, Service de Cytogenetique et de Foetopathologie, Hopital Saint Antoine, Paris, France; and Jean-Eric Develay-Morice, MD, Ultrasonographer, Nimes Maternity Service, Hopital Carremeau, Nimes, France |