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Instrumental Variable Estimation of the Causal Effect of Plasma 25-Hydroxy-Vitamin D on Colorectal Cancer Risk: A Mendelian Randomization Analysis
- Evropi Theodoratou,
- Tom Palmer,
- Lina Zgaga,
- Susan M. Farrington,
- Paul McKeigue,
- Farhat V. N. Din,
- Albert Tenesa,
- George Davey-Smith,
- Malcolm G. Dunlop,
- Harry Campbell
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- Published: June 6, 2012
- https://doi.org/10.1371/journal.pone.0037662