ArticleBMJ (Clinical research ed.)2011
Study subject to unmeasured confounders and biases.
Anne Szarewski et al.PubMed ↗Publisher ↗
No numbers read from the abstract.
1 paper cites it
this papercites it
ArticleBMJ (Clinical research ed.)2011
Anne Szarewski et al.PubMed ↗Publisher ↗
No numbers read from the abstract.