[2012 May] When Do The Benefits Of Ultrasound Outweigh The Dangers? by Judy Cohain, CNM  Since the ability of ultrasound to both diagnose and improve outcomes of severe defects is close to non-existant in most locations, routine prenatal ultrasound screening is most often simply the best way to terrify a pregnant woman. 

[2006] Questions about Prenatal Ultrasound and the Alarming Increase in Autism by Caroline Rodgers