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Impact of replacing or adding placental growth factor on Down syndrome screening: A prospective cohort study |
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| Authors: | Angela Wing To Sin Liona C Poon Piya Chaemsaithong Yi Man Isabella Wah Shuk Yi Annie Hui Yuen Ha Ting Kwok Ming Law Tak Yeung Leung Daljit Singh Sahota |
| Institution: | Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong |
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