- Correspondence to Dr Helena M Gardiner, Texas Fetal Center, University of Texas at Houston, UT Professional Building, 6410 Fannin, Suite 210, Houston, Texas 77030, USA;
- Received July 12, 2013
- Revised October 21, 2013
- Accepted October 23, 2013
- First published November 22, 2013.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.