REFERENCES
- Burgess, E. A., Levin, B., Mahalanabis, D. & Tonge, R. E. 1964. Hereditary sucrose intolerance: levels of sucrase activity in jejunal mucosa. Arch. Dis. Childh. 39, 431–443.
- Chaudhary, N. A. & Truelove, S. C. 1962. The irritable colon syndrome: A study of the clinical features, predisposing causes and prognosis in 130 cases. Quart. J. Med. 31, 307–322.
- Dahlqvist, A. 1961. Determination of maltase and isomaltase activities with a glucose oxidase reagent. Biochem. J. 80, 547–551.
- Dahlqvist, A. 1964. Method for assay of intestinal disaccharidases. Analyt. Biochem. 7, 18–25.
- Laws, J. W. & Neale, G. 1967. Radiological diagnosis of disaccharidase deficiency. Lancet 2, 139–143.
- Lumsden, K., Chaudhary, N. A. & Truelove, S. C. 1963. The irritable colon syndrome. Clin. Radiol. 14, 54–63.
- McDonagh, T. J. 1969. Lactose intolerance. A newly recognised cause of gastrointestinal symptoms seen in the practice of occupational medicine. J. occup. Med. 11, 57–64.
- McMichael, H. B., Webb, J. & Dawson, A. M. 1965. Lactase deficiency in adults: A cause of ‘functional’ diarrhoea. Lancet 1, 717–720.
- Nicolaescu, T., Stoiculescu, P., Bittman, E., Schian, S., Stoenescu, R. & Jana, A. 1970. Intestinal lactase deficiency in the physiopathology of the colon. p. 591 in Riis, P., Anthonisen, P. & Baden, H. (eds.) Adv. Abst. 4th World Congress of Gastroenterology, Copenhagen.
- Pena, A. S., Truelove, S. C. & Whitehead, R. 1972. Morphology and disaccharidase levels of jejunal biopsy specimens from healthy British subjects. Awaiting publication.
- Salem, S. N., Salt, R. H. & Truelove, S. C. 1965. Crosby small-intestinal capsule with radio-opaque tube and latex sheath. Gut 6, 99–100.
- Sols, A. & de la Fuente, G. 1957. Glucosa oxidasa en analisis. Rev. esp. Fisiol. 13, 231–245.
- Sols, A. & de la Fuente, G. 1961. Hexokinase and other enzymes of sugar metabolism in the intestine. pp. 302–309 in Quastel, J. H. (ed.) Methods in Medical Research, Vol. 9. Year Book Medical Publishers, Chicago.
- Weser, E., Rubin, W., Ross, L. & Sleisenger, M. H. 1965. Lactase deficiency in patients with the ‘irritable colon syndrome’. New Engl. J. Med. 273, 1070–1075.