1. Headache & Orofacial Pain Effort (H.O.P.E.), Department of Biologic and Materials Sciences and MCOHR, School of Dentistry, University of Michigan, 1011 N. University Ave., Room 1014A, Ann Arbor, MI 48109-1078, USA
2. Molecular and Behavioral Neuroscience Institute (MBNI), 205 Zina Pitcher, Room 1021, Ann Arbor, MI 48104, USA
3. Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Brazil