a prospective study of 447 labours and the resulting newborn failed to reveal any significant difference between the incidence of neonatal hyperbilirubinaemia , defined as a level of at least 205 mumol/l ( 12 mg/100 ml ) , following spontaneous labour and after labour induced or accelerated with prostaglandin e2 ( pge2 ) .
C0474461
spontaneous labour
C0022864
labour