@article{{MRA}{}, author = {Gallop, R., Guo, W., Landis, R., Lanken, P.}, title = { Flexible Cluster matching methods for Nested Case-Control Studies: Design and Statistical Considerations for a study of Acute Respiratory Distress Syndrome}, journal = {Medical Research Archives}, volume = {5}, number = {1}, year = {2017}, url = {https://esmed.org/MRA/mra/article/view/888} }