[1] Univ Rochester, Sch Med & Dent, Dept Anesthesiol, Rochester, NY 14642 USA
[2] Univ Rochester, Dept Neurol, Rochester, NY 14642 USA
[3] Univ Rochester, Dept Med, Rochester, NY 14642 USA
[4] Columbia Univ, Dept Pediat, New York, NY USA
[5] Univ Alabama Birmingham, Dept Med, Birmingham, AL USA
[6] Univ Alabama Birmingham, Dept Pediat, Birmingham, AL USA
[7] Birmingham Vet Affairs Med Ctr, Birmingham, AL USA
[8] Univ Colorado, Dept Pediat, Denver, CO 80202 USA
[9] Univ Wisconsin, Dept Neurol, Madison, WI 53706 USA
[10] Harvard Univ, Dept Neurol, Cambridge, MA 02138 USA
[11] Harvard Univ, Sch Med, Dept Ophthalmol, Boston, MA USA
[12] Univ Calif San Diego, Dept Med, San Diego, CA 92103 USA
[13] Univ Calif San Diego, Dept Anesthesiol, San Diego, CA 92103 USA
[14] Univ Calif San Francisco, Dept Neurol, San Francisco, CA USA
[15] Duke Univ, Dept Med, Durham, NC USA
[16] Univ Texas, Hlth Sci Ctr, Houston, TX USA
[17] Univ Oregon, Dept Anesthesiol, Portland, OR USA
[18] Univ Bristol, Dept Anesthesiol, Bristol, Avon, England
[19] Queen Mary Coll, Skin Virus Lab, London, England
[20] Royal Hallamshire Hosp, Dept Infect & Trop Med, Sheffield S10 2JF, S Yorkshire, England
[21] Univ Liverpool, Dept Neurol Sci, Liverpool, Merseyside, England
[22] Helsinki Univ Hosp, Dept Anesthesiol & Intens Care, Helsinki, Finland
[23] Helsinki Univ Hosp, Dept Neurol, Helsinki, Finland
[24] Univ Utrecht, Pain Clin, Utrecht, Netherlands
[25] Klinikum Krefeld, Dermatol Klin, Krefeld, Germany