1. The complexity of fetal imaging: reconciling clinical care with patient entertainment;Simonsen;Obstet Gynecol,2008
2. 2005 http://www.acr.org/MainMenuCategories/media_room/FeaturedCategories/PressReleases/Archive/TomCruisesReportedUnsupervisedUseofFetalKeepsakeUltrasoundRaisesRiskforBabyandIsPotentiallyUnlawful.aspx
3. FDA http://www.fda.gov/MedicalDevices/Safety/AlertsandNotices/PatientAlerts/ucm064756.htm
4. American Institute of Ultrasound in Medicine 2005 http://www.aium.org/publications/viewStatement.aspx?id=31
5. BMUS http://www.bmus.org/policies-guides/pg-safety03.asp