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Pathological tumor type for patients undergoing pancreaticoduodenectomy at UCSF-affiliated hospitals, 1989–2003. ML, Moffit-Long Hospital; LVHG, low-volume hospital group, is the combined data for San Francisco County General Hospital, Veterans Affairs Medical Center of San Francisco, and Mount Zion Hospital; IPMN, Intraductal Papillary Mucinous Neoplasm ( by Fisher's exact test).
