Hayashi, M Prenatal diagnosis of exencephaly associated with high levels of maternal serum human chorionic gonadotropin and urinary beta-core fragment of hCG/creatinine ratio. [electronic resource] - Prenatal diagnosis Dec 1994 - 1173-4 p. digital Publication Type: Case Reports; Letter ISSN: 0197-3851 Standard No.: 10.1002/pd.1970141214 doi Subjects--Topical Terms: AdultBrain--abnormalitiesChorionic Gonadotropin--bloodChorionic Gonadotropin, beta Subunit, HumanCreatinine--urineFemaleHumansJapanNeural Tube Defects--diagnosisPeptide Fragments--urinePregnancyPrenatal Diagnosis