Additional file 3."Search strategies for biochemical markers used in Down's serum screening to predict preeclampsia/small for gestational age." Electronic search strategies for systematic reviews. Format: DOC Size: 64KB Download file This file can be viewed with: Microsoft Word Viewer Morris et al. BMC Pregnancy and Childbirth 2008 8:33 doi:10.1186/1471-2393-8-33 |