TY  - RPRT
TI  - Those confounded vitamins: what can we learn from the differences between observational versus randomised trial evidence?
AU  - Debbie A Lawlor
AU  - George Davey Smith
AU  - Devi Kundu
AU  - K Richard Bruckdorfer
AU  - Shah Ebrahim
PY  - 2004
DO  - 10.1016/s0140-6736(04)16260-0
UR  - https://pubmed.ncbi.nlm.nih.gov/15158637/
ID  - 15158637
ER  -