1. Department of Epidemiology, Geisel School of Medicine at Dartmouth
2. Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
3. Department of Biostatistics, University of Kansas Medical Center, Kansas City, KS, USA
4. Department of Community and Family Medicine, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA