1. Development of a Crohn's disease activity index-National cooperative Crohn's disease study;Best, W.R.; Becktel, J.M.; Singleton, J.W.; F, Jr, Kern;Gastroenterology,1976
2. Double-blind withdrawal trial of azathioprine as maintenance treatment for Crohn's disease;O'Donoghue, D.P.; Dawson, A.M.; Powell-Tuck, J.; Brown, R.L.; Lennard-Jones, J.E.;Lancet,1978
3. Rederived values of eight coefficients of the Crohn's disease activity index;Best, W.R.; Becktel, J.M.; Singleton, J.W.;Gastroenterology,1979
4. Uses and limitations of the Crohn's disease activity index;Teixeira, M.; Ferguson, A.;Arq Gastroenterol S Paulo,1979
5. A simple index of Crohn's disease activity;Harvey, R.F.; Bradshaw, J.M.;Lancet,1980