Article Information
PubMed
History
- Published online April 10, 2006.
Copyright & Usage
© 2006 CMA Media Inc. or its licensors
Author Information
- Jane Henderson,
- Stavros Petrou
- Jane Henderson and Stavros Petrou are with the National Perinatal Epidemiology Unit, University of Oxford, England.
- Correspondence to:
Ms. Jane Henderson, National Perinatal Epidemiology Unit, Old Road Campus, Oxford 0X3 7LF UK; fax +44-1865-227002; jane.henderson{at}npeu.ox.ac.uk