Callender GG, Kaplan BJ, White RL, Brenin DR, Chagpar AB, Dalal KM, Howard-McNatt M, Howe J, Kim J, Kurtzman SH, Mansour JC, Mittendorf EA, Stewart JH, Temple LK, Stella P, Cummings C, Wong SL, Klimberg VS. Maintenance of certification: what everyone needs to know. Ann Surg Oncol. 2015 Apr; 22(4):1051-4.