1. Gastrointestinal and nutritional manifestations of cystic fibrosis;Barbero, G.J.; Shwachman, H.; Grand, R.; Woodruff, C.
2. Projections into the future,1976
3. Gastrointestinal manifestations of cystic fibrosis;Kopel, F.B.;Gastroenterology,1972
4. Cystic fibrosis in aaults. 75 cases and a review of 232 cases in the literature;PA, Di Sant'Agnese; PB, Davis;Am J Med,1979
5. Cystic fibrosis: a new outlook. 70 patients above 25 years of age;Shwachman, H.; Kowalski, M.; Khan, K.;Medicine,1977