Neuralgia, Postherpetic

• Horizon Research Group, LLC — Mobile, Alabama, United States
• Physician Alliance Research Center — Anaheim, California, United States
• Adam D. Karns, MD — Beverly Hills, California, United States
• Associated Pharmaceutical Research Center, Inc. — Buena Park, California, United States

• Seoul National University Hospital, Seoula National University Bundang Hospital — Seoul, South Korea

• Chonbuk National University Hospital — Jeonju, Jeollabuk-do, South Korea

• Chonbuk National University Hospital — Jeonju, Jeollabuk-do, South Korea

• Charité hospital — Berlin, State of Berlin, Germany

• Neurology Clinical Research, Inc. — Sunrise, Florida, United States
• Pain and Rehabilitationi Clinic of Chicago — Chicago, Illinois, United States
• Michigan Head-Pain and Neurological Institute — Ann Arbor, Michigan, United States
• U.T. Pain Specialist — Etobicoke, Ontario, Canada

• MGH Center for Translational Pain Research — Boston, Massachusetts, United States

• Divisão de Clínica Neurológica do Hospital das Clínicas da FMUSP — São Paulo, Brazil
• Hôpital Ambroise Paré, APHP — Boulogne-Billancourt, France
• Hôpital Dupuytren — Limoges, France

• Arizona Research Center — Phoenix, Arizona, United States
• Torrance Clinical Research — Lomita, California, United States
• Alpine Clinical Research Center — Boulder, Colorado, United States
• Brain Matters Research — Delray Beach, Florida, United States

Not specified