Clinical obstetrics practice is a very important process.

临床产科实习是一个非常重要的实践过程。

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OBJECTIVE: To evaluate the use of letrozole in reproduction and clinical obstetrics gynecology.

目的：评价来曲唑在生育与妇产科临床应用情况。

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Objective: To investigate the prenatal ultrasound diagnosis in obstetrics clinical application value.

目的：探讨产前超声诊断在产科临床的应用价值。

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New mothers may also be reluctant in bed because of physical discomfort or because they have some element of postpartum depression, said Dr. Rini Ratan, assistant clinical professor of obstetrics and gynecology at Columbia University Medical Center.

CNN: New moms and the post-baby sex slump