Keratosis

• Washington University School of Medicine — St Louis, Missouri, United States

• University of Colorado Anschutz Medical Campus — Aurora, Colorado, United States
• Universidad Francisco Marroquin — Guatemala City, Guatemala

• University of Colorado Anschutz Medical Campus — Aurora, Colorado, United States
• University Teaching Hospital — Lusaka, Zambia

• University hospital Regensburg — Regensburg, Bavaria, Germany

• Department of Periodontology, Center for Dental, Oral, and Maxillofacial Medicine (Carolinum), JWG-University — Frankfurt am Main, Germany

• Therapeutics Clinical Research — San Diego, California, United States
• Dermatology Specialists Research, LLC — Louisville, Kentucky, United States
• Dermatology Consulting Services; Zoe Diana Draelos, MD — High Point, North Carolina, United States
• Tennessee Clinical Research Center — Nashville, Tennessee, United States

• Chiayi Chang Gung Memorial Hospital — Chiayi City, Taiwan
• Kaohsiung Chang Gung Memorial Hospital — Kaohsiung City, Taiwan
• Kaohsiung Medical University Chung-Ho Memorial Hospital — Kaohsiung City, Taiwan
• Kaohsiung Veterans General Hospital — Kaohsiung City, Taiwan

Not specified

• Medical Affiliated Research Center, Inc. — Huntsville, Alabama, United States
• Radiant Research — Tucson, Arizona, United States
• Burke Pharmaceutical Research — Hot Springs, Arkansas, United States
• Advanced Dermatology and Cosmetic Surgery — Clermont, Florida, United States

• Hauttumorcentrum Charité (HTCC) — Berlin, Germany
• Medizinisches Zentrum Bonn - Friedensplatz — Bonn, Germany
• Hautzentrum — Düsseldorf, Germany
• Johannes Wesling Klinikum Minden — Minden, Germany