@misc{indiciae7b1021f140ca, title = {Efficiency loss from categorizing quantitative exposures into qualitative exposures in case-control studies.}, author = {L P Zhao and L N Kolonel}, year = {1992}, doi = {10.1093/oxfordjournals.aje.a116520}, url = {https://pubmed.ncbi.nlm.nih.gov/1415166/}, note = {Source identifier: 1415166} }