Appleton A L, Sviland L, Pearson A D, Green M A, Eastham E J, Malcolm A J
Department of Pathology, University of Newcastle upon Tyne, Royal Victoria Infirmary, England.
J Pediatr Gastroenterol Nutr. 1993 Feb;16(2):183-5. doi: 10.1097/00005176-199302000-00015.