Sa1181 PREVALENCE AND RISK FACTORS FOR AMPULLARY ADENOMA AMONG MIDDLE EASTERN FAMILIAL ADENOMATOUS POLYPOSIS PATIENTS von Alobaid, Dhari, Arabi, Tarek Z., Maklad, Ahmed E., Arabi, Sidrah, Abdulkader, Humzah, Alayban, Ghadah, Abou-Gamel, Mahmoud, Alajlan, Bader, Abbass, Mohammad Ali, Aadam, A. Aziz, Al-Bawardy, Badr, Almuhaidb, Aymen

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