BUFFALO, New York, Feb. 11 -- The Roswell Park Comprehensive Cancer Center issued the following news release: Roswell Park Comprehensive Cancer Center is proud to announce its designation as an Optum(R) Cancer Center of Excellence (COE) for our pediatric and adult populations. Optum and its Clinical Sciences Institute -- a group of more than 100 practicing clinicians from across the country -- develops the COE networks through a rigorous evaluation process. An industry leader in health and wel  more