Precancerous Conditions

• University Hospitals Ahuja Medical Center — Beachwood, Ohio, United States
• Case Medical Center, University Hospitals Seidman Cancer Center, Case Comprehensive Cancer Center — Cleveland, Ohio, United States
• Cleveland Clinic Taussig Cancer Institute, Case Comprehensive Cancer Center — Cleveland, Ohio, United States

• Saint-Damien Health-Care Centre — Ambanja, Antsiranana, Madagascar

• University of Maryland, Dept. of Family Medicine — Baltimore, Maryland, United States

• 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

• Zydolab - Institute of Cytology and Immune Cytochemistry — Dortmund, North Rhine-Westphalia, Germany
• Department of Obstetrics and Gynecology of the Ruhr University Bochum — Herne, North Rhine-Westphalia, Germany

• Gastrointestinal Associates and sites across the US — Knoxville and Other US Cities, California, United States

Not specified

• The Scripps Research Institute — La Jolla, California, United States
• University of Maryland Medical Center — Baltimore, Maryland, United States
• Syosset Hospital — Lake Success, New York, United States
• University of North Carolina-Chapel Hill — Chapel Hill, North Carolina, United States

• Korea University Guro Hospital — Seoul, South Korea
• The Dongsan Medical Center of Keimyung Hospital — Daegu, South Korea
• Kwandong University College of Medicine Cheil Hospital — Seoul, South Korea
• CHA Gangnam Hospital — Seoul, South Korea