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Family size, fertility preferences, and sex ratio in China in the era of the one child family policy: results from national family planning and reproductive health survey

BMJ 2006; doi: https://doi.org/10.1136/bmj.38775.672662.80 (Published 11 May 2006) Cite this as: BMJ 2006;:bmj;bmj.38775.672662.80v1

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