1. Kaiser Permanente Washington Health Research Institute Seattle Washington USA
2. Fred Hutchinson Cancer Research Center Seattle Washington USA
3. Family Medicine and Public Health University of California San Diego California USA
4. Department of Epidemiology and Environmental health State University of New York Buffalo New York USA
5. Department of Kinesiology and Community Health University of Illinois Urbana‐Champaign Champaign Illinois USA
6. Department of Epidemiology University of North Carolina Chapel Hill North Carolina USA
7. Medicine ‐ Stanford Prevention Research Center Stanford University Stanford California USA