Oral Ulcer

• Banner MD Anderson Cancer Center — Gilbert, Arizona, United States
• Fowler Family Center for Cancer — Jonesboro, Arkansas, United States
• The Oncology Institute of Hope & Innovation — Corona, California, United States
• Chan Soon-Shiong Institute for Medicine — Costa Mesa, California, United States

• Department of Pediatric Dentistry, Postgraduate dental clinic, Faculty of Dentistry, Chulalongkorn University — Bangkok, Thailand

• Al Azhar university — Cairo, Egypt

• 12 sites incl Yakima, WA, Boulder, CO, and Austin, TX — US, Texas, United States

• Assiut governorate — Asyut, Egypt

• Dr. Joel Epstein — Beverly Hills, California, United States
• Biosolutions Clinical Research Center — La Mesa, California, United States
• Loma Linda School of Dentistry — Loma Linda, California, United States
• Tower ENT, based at Cedars Sinai Medical Center — Los Angeles, California, United States

• University fo Urbino Carlo Bo — Urbino, Italy

• Eman Ahmed — Banī Suwayf, Beni Suweif Governorate, Egypt

Not specified

• University of Washington — Seattle, Washington, United States