1. Department of Psychology, Central Michigan University, Mt. Pleasant, Michigan, USA.
2. Department of Psychiatry and Behavioral Sciences, Rush University Medical Center, Chicago, Illinois, USA.
3. Departments of Psychology and Medicine, Tulane University, New Orleans, Louisiana, USA.
4. School of Nursing, Vanderbilt University, Nashville, Tennessee, USA.
5. Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA.