@misc{indiciaed7b2315414a4, title = {Comparison of study controls.}, author = {Seiichiroh Ohsako and Chiharu Tohyama}, year = {2005}, doi = {10.1289/ehp.113-1280432}, url = {https://pubmed.ncbi.nlm.nih.gov/16140606/}, note = {Source identifier: 16140606} }