1. Department of Psychology and Neuroscience, Boston College, Boston, MA
2. Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Recherche CIUSSS NIM, Quebec, Canada
3. Department of Psychology, Université de Montréal, Montréal, Quebec, Canada
4. Department of Psychiatry, Harvard Medical School, Boston, MA
5. Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA
6. Behavioral Biology Branch, Walter Reed Army Institute of Research, Silver Spring, MD