1. Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
2. The Johns Hopkins University, Bloomberg School of Public Health, Department of International Health, Baltimore, MD, USA
3. The Johns Hopkins University, School of Medicine, Otolaryngology Department, Head and Neck Cancer Research Division, Baltimore, MD, USA
4. Universidad Peruana Cayetano Heredia, Lima, Perú
5. Hospital Nacional Cayetano Heredia, Pathology Department, Lima, Perú
6. Instituto Nacional de Enfermedades Neoplásicas, Gastroenterology Department, Lima, Perú
7. Hospital Nacional Arzobispo Loayza, Gastroenterology Department, Lima, Perú
8. Hospital Nacional Dos de Mayo, Gastroenterology Department, Lima, Perú
9. Laboratory of Molecular Pathology, Department of Pathological Anatomy, School of Medicine, Universidad de La Frontera, Temuco, Chile
10. Center of Excellence in Translational Medicine - Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Universidad de La Frontera, Temuco, Chile
11. Washington University Medical School, Department of Molecular Microbiology, St Louis, MO, USA
12. University of California San Diego, Department of Medicine, La Jolla, CA, USA
13. Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
14. University of Puerto Rico School of Medicine, Department of Obstetrics and Gynecology, San Juan, Puerto Rico