@misc{indiciae2d706e7b5105, title = {Randomized concentration-controlled trials: motivations, use, and limitations.}, author = {Holger Kraiczi and Theo Jang and Thomas Ludden and Carl C Peck}, year = {2003}, doi = {10.1016/s0009-9236(03)00169-3}, url = {https://pubmed.ncbi.nlm.nih.gov/12966364/}, note = {Source identifier: 12966364} }