1. Division of Clinical Pharmacology and Experimental Therapeutics, Medical Service, Departments of Medicine and Bioengineering & Therapeutic Sciences, University of California, San Francisco, California, USA
2. Center for Tobacco Control Research and Education, University of California, San Francisco, California, USA
3. Alaska Native Tribal Health Consortium, Anchorage, AK, USA
4. Mayo Clinic, Rochester, MN, USA
5. University of Minnesota, Minneapolis, MN, USA
6. Department of Obstetrics and Gynecology, Alaska Native Medical Center, Southcentral Foundation, Anchorage, AK, USA