机译:胎儿健康状况的监测:尿液中的雌二醇/肌酐和血清游离雌二醇测定的比较
The International Peace Maternity and Child Health Hospital of the China Welfare Institute;
Shanghai;
The Department of Radioimmunoassay of Shanghai Institute of Biological Products;
Shanghai;
serum free estriol randomized urine estriol/creatinine perinatal fetal well-being;