Re: Circulating vitamin D concentration and risk of seven cancers: Mendelian randomisation study
It is an interesting paper. I was particularly attracted to the OR. All are close to the null value. And all of them are insignificant. Still, the authors claim: "There is little evidence for a linear causal association between circulating vitamin D concentration and risk of various types of cancer". I was interested in reading the peer-reviewers' report. Unfortunately, the peer-reviewers' report annexed in this publication was from another manuscript entitled "Obesity and women’s health: an umbrella review of the literature". I never expected this from the BMJ.
Competing interests: No competing interests