PubMed:: "Fetal Growth Retardation"[Mesh] OR growth retard*[tiab] OR iugr[tiab] OR growth restrict*[tiab] OR fgr[tiab];; Embase.com:: 'intrauterine growth retardation'/de OR (growth NEXT/1 retard*):ti,ab OR iugr:ti,ab OR (growth NEXT/1 restrict*):ti,ab OR fgr:ti,ab;; Cochrane Library:: 'intrauterine growth retardation' OR (growth AND retard*) OR iugr OR (growth AND restrict*) OR fgr