Cite
HARVARD Citation
Joffe, M. et al. (1995). A time to pregnancy questionnaire designed for long term recall: validity in Oxford, England.. Journal of epidemiology and community health. 49 (3), pp. 314-319. [Online].
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Joffe, M. et al. (1995). A time to pregnancy questionnaire designed for long term recall: validity in Oxford, England.. Journal of epidemiology and community health. 49 (3), pp. 314-319. [Online].