Chew, F T Antenatal cardiotocography in patients with persistently subnormal urinary oestriol excretion. [electronic resource] - The Australian & New Zealand journal of obstetrics & gynaecology Feb 1977 - 18-27 p. digital Publication Type: Case Reports; Journal Article ISSN: 0004-8666 Standard No.: 10.1111/j.1479-828x.1977.tb02663.x doi Subjects--Topical Terms: AdultEstriol--urineFemaleFetal Distress--diagnosisFetal Heart--physiologyHeart RateHumansPregnancyUterine Contraction