1. Department of Anesthesiology; University of Pittsburgh School of Medicine; Pittsburgh PA USA
2. School of Nursing; University of Connecticut; Storrs CT USA
3. Institute for Systems Genomics; University of Connecticut; Storrs CT USA
4. Department of Pharmacology and Experimental Therapeutics and Department of Psychiatry; Boston University School of Medicine; Boston MA USA
5. Department of Neuroscience & Cell Biology; University of Texas Medical Branch; Galveston TX USA
6. Department of Psychiatry and Behavioral Neuroscience; University of Chicago; Chicago IL USA
7. Department of Human Genetics; University of Chicago; Chicago IL USA
8. Department of Psychiatry; University of California San Diego; La Jolla CA USA
9. Department of Psychology and Alan Edwards Centre for Research on Pain; McGill University; Montreal Canada
10. Mammalian Genetics & Genomics, Oak Ridge National Laboratory; Oak Ridge TN USA
11. The Jackson Laboratory; Bar Harbor ME USA