Interesting Links:

Dr. Marc Levitt, Lucy's Surgeon

http://www.cincinnatichildrens.org/svc/find-professional/l/marc-levitt.htm

Cincinnati Children's Hospital

http://www.cincinnatichildrens.org/about/default.htm

Colorectal Center at Cincinnati Children's Hospital

(Includes video of Dr. Levitt explaining HD)

http://www.cincinnatichildrens.org/svc/alpha/c/colorectal/default.htm