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  3. Influence of definition based versus pragmatic birth registration on international comparisons of perinatal and infant mortality: population based retrospective study
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Research

Influence of definition based versus pragmatic birth registration on international comparisons of perinatal and infant mortality: population based retrospective study

BMJ 2012; 344 doi: https://doi.org/10.1136/bmj.e746 (Published 17 February 2012) Cite this as: BMJ 2012;344:e746
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