1. Department of Social and Behavioral Sciences, Indiana University-Purdue University Indianapolis, Indianapolis, USA
2. Division of Field Studies and Engineering, National Institute for Occupational Safety and Health, Cincinnati, USA
3. Department of Biostatistics, Indiana University School of Medicine, Indianapolis, Indiana, USA
4. Department of Global Health, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana, USA
5. Department of Epidemiology and Biostatistics, Temple University, Philadelphia, USA
6. Department of Epidemiology and Biostatistics, Drexel University, Philadelphia, USA