?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Chang%2C+Tou+Choong&rft.aufirst=Tou+Choong&rft.aulast=Chang&rft.date=1994&rft.title=Diagnosis+of+growth+retardation+in+small+fetuses%3A+serial+ultrasound+assessment+of+abdominal+circumference+and+fetal+weight&rft.tpages=243&rft.inst=UCL+(University+College+London)&rft.degree=Doctoral