- Correspondence to: Professor N Künzli Keck School of Medicine University of Southern California, 1540 Alcazar, CHP 236, Los Angeles, CA 90033, USA;
- Accepted October 22, 2004
- First published May 23, 2005.
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1. Details of the power calculation for the case-crossover-model.
2. Details of the power calculation for the Poisson-regression model.
- [view PDF] - 1. Details of the power calculation for the case-crossover-model.
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