Roberts JP, Brown RS Jr, Edwards EB, Farmer DG, Freeman RB Jr, Wiesner RH, Merion R. M. SRTR Report on the State of Transplantation:. Liver and Intestine Transplantation. American Journal of Transplantation 2003; 3 (Suppl. 4): 78–90.
In the last sentence on page 88 of the above-cited article, the quoted source (27) defines center size on the basis of total intestine transplants performed, not intestine transplants per year.