1. Dartmouth-Hitchcock Medical Center, Lebanon, Norris Cotton Cancer Center, Lebanon, New Hampshire, USA
2. Department of Biology and Biochemistry, University of Bath, Bath, United Kingdom
3. Department of Genetics, Dartmouth Medical School, Hanover, New Hampshire, USA
4. Tennessee Technological University, Cookeville, Tennessee, USA
5. Department of Medicine, and
6. Department of Pharmacology and Toxicology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA