Biopsy of the Papilla in Patients With Familial Adenomatous Polyposis (FAP): Risks, Benefits, and Changes in Management: 1193. (October 2019) - Mehta, Neal; Shah, Ravi; Yoon, Ji Yoon; O'Malley, Margaret; LaGuardia, Lisa; Mankaney, Gautam; Bhatt, Amit; Burke, Carol A.