1. Division of Neuroradiology, Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, Tennessee.
2. Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.
3. School of Nursing, Vanderbilt University Medical Center, Nashville, Tennessee.
4. Department of Radiation Oncology, Vanderbilt University Medical Center, Nashville, Tennessee.
5. College of Nursing, East Carolina University, Greenville, North Carolina.
6. Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.