[1] Mayo Clin & Mayo Fdn, Peripheral Neuropathy Res Lab, Rochester, MN 55905 USA
[2] Mayo Clin & Mayo Fdn, Sect Stat, Rochester, MN 55905 USA
[3] Univ Minnesota, Dept Neurol, Minneapolis, MN 55455 USA
[4] Good Samaritan Hosp & Med Ctr, Dept Neurol, Portland, OR 97209 USA
[5] Wayne State Univ, Dept Neurol, Detroit, MI USA
[6] Mayo Clin Scottsdale, Dept Neurol, Scottsdale, AZ USA