@misc{indiciaeb46dc469dd21, title = {Concentration-controlled trials. What does the future hold?}, author = {A Johnston and D W Holt}, year = {1995}, doi = {10.2165/00003088-199528020-00001}, url = {https://pubmed.ncbi.nlm.nih.gov/7736691/}, note = {Source identifier: 7736691} }