1. Clinical and Magnetic Resonance Research Center, University of New Mexico Health Sciences Center, 1201 Yale Boulevard North–East,Albuquerque, NM 87131, USA
2. Department of Psychology, University of New Mexico, Albuquerque, NM 87131, USA
3. Department of Neurosciences, University of New Mexico, Albuquerque, NM 87131, USA
4. StJoseph's Rehabilitation Hospital, Albuquerque, NM 87131, USA
5. Department of Rheumatology, University of New Mexico, Albuquerque, NM 87131, USA