1. International Agency for Research on Cancer, Lyon, France
2. School of Public Health and Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California, USA
3. Norris Cotton Cancer Center and
4. Section of Biostatistics and Epidemiology, Department of Community and Family Medicine, Dartmouth Medical School, Lebanon, New Hampshire, USA
5. Comprehensive Thoracic Oncology Program, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
6. Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire, USA