@misc{indiciaee9ab5ed6ac47, title = {Selection of controls.}, author = {J A Childress and J D Childress}, year = {1990}, doi = {10.1016/0196-6553(90)90172-o}, url = {https://pubmed.ncbi.nlm.nih.gov/2403221/}, note = {Source identifier: 2403221} }