@misc{indiciaee4c2160464a0, title = {Difficulty with MEDLINE searches for randomised controlled trials.}, author = {C E Adams and C Lefebvre and I Chalmers}, year = {1992}, doi = {10.1016/0140-6736(92)93329-l}, url = {https://pubmed.ncbi.nlm.nih.gov/1357327/}, note = {Source identifier: 1357327} }