@misc{indiciaebacc76504c7d,
  title = {Those confounded vitamins: what can we learn from the differences between observational versus randomised trial evidence?},
  author = {Debbie A Lawlor and George Davey Smith and Devi Kundu and K Richard Bruckdorfer and Shah Ebrahim},
  year = {2004},
  doi = {10.1016/s0140-6736(04)16260-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/15158637/},
  note = {Source identifier: 15158637}
}