References
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- Nelson T. R. A Clinical Study of Pre-eclampsia. Journal of Obstetrics and Gynaecology of British Empire 1955; 62: 48
- Samphier M. L., Thompson B. Aberdeen Maternal and Neonatal Data Bank. Prospective Longitudinal Research, S. A. Mednick, A. E. Baert. O.U.P., London 1982; 61–65