[1] Univ Kansas, Med Ctr, Dept Internal Med, Kansas City, KS 66103 USA
[2] Univ Kansas, Med Ctr, Dept Neurol, Kansas City, KS USA
[3] Univ Kansas, Med Ctr, Sch Nursing, Kanas City, KS USA
[4] Univ Kansas, Med Ctr, Dept Phys Therapy Rehabil Sci & Athlet Training, Kansas City, KS USA