Katz Daniel A, Martinez-Mier Gustavo, Rayhill Stephen C, Mitros Frank A, Kanchustambam Subba R, Wu You Min
Department of Surgery, University of Iowa College of Medicine, Iowa City, Iowa 52242, USA.
Dig Dis Sci. 2003 Sep;48(9):1685-7. doi: 10.1023/a:1025470306597.