1. Division of Epidemiology, Department of Environmental and Public Health Sciences University of Cincinnati College of Medicine Cincinnati Ohio USA
2. Department of Biostatistics Harvard T.H. Chan School of Public Health Boston Massachusetts USA
3. Center for Health Informatics, Department of Biomedical Informatics, College of Medicine University of Cincinnati Cincinnati Ohio USA
4. Division of Infectious Diseases, Department of Medicine University of Cincinnati College of Medicine Cincinnati Ohio USA
5. Division of Asthma Research, Department of Pediatrics, Cincinnati Children's Hospital Medical Center University of Cincinnati Cincinnati Ohio USA
6. Division of Biostatistics and Bioinformatics, Department of Environmental and Public Health Sciences University of Cincinnati College of Medicine Cincinnati Ohio USA