Oszczygiel A, Lachowicz L, Jedrzejczak M
Zentralbl Gynakol. 1976;98(12):721-4.
The levels of oestriol in urine of 30 healthy pregnant women in the last 22 to 25 days of pregnancy were determined and the statistical analysis was performed. It was found that the levels of oestriol in urine were the highest in 19-th and 9-th days before labour. This form of curve of oestriol levels was found to be characteristic for pregnant women before normal labour.
测定了30名健康孕妇在妊娠最后22至25天尿液中的雌三醇水平，并进行了统计分析。发现尿液中雌三醇水平在分娩前第19天和第9天最高。这种雌三醇水平曲线形式被发现是正常分娩前孕妇的特征。
