1. Division of Physical Therapy Education, School of Allied Health Professions, College of Medicine, 984420 Nebraska Medical Center, University of Nebraska Medical Center, Omaha, NE 68198-4420, USA
2. College of Nursing, University of Nebraska Medical Center, Omaha, NE 68198-5330, USA
3. College of Nursing, University of Nebraska Medical Center, Lincoln, NE 68588-0220, USA
4. Panhandle Research and Extension, University of Nebraska-Lincoln, Scottsbluff, NE 69361, USA