Congenital anomaly surveillance in England—ascertainment deficiencies in the national system
Objective Firstly, to assess the completeness of ascertainment in the National Congenital Anomaly System (NCAS), the basis for congenital anomaly surveillance in England and Wales, and its variation by defect, geographical area, and socioeconomic deprivation. Secondly, to assess the impact of the la...
| Định dạng: | Journal article |
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| Được phát hành: |
BMJ Publishing Group
2005
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