1. Science Programs Department Kaiser Permanente Center for Health Research Portland Oregon USA
2. Oregon Rural Practice‐based Research Network Oregon Health & Science University Portland Oregon USA
3. OHSU‐PSU School of Public Health Division Oregon Health & Science University Portland Oregon USA
4. Department of Family Medicine Oregon Health & Science University Portland Oregon USA
5. Department of Population Sciences University of Arizona Cancer Center Tucson Arizona USA
6. Department of Epidemiology and Biostatistics, Mel and Enid Zuckerman College of Public Health University of Arizona Tucson Arizona USA