1. Alessandrini, A., Fusco, M. A., Gatti, E., and Rossi, P. A., 1982, Dietary fibres and cholesterol gallstones: A case control study, Ital. J. Gastroenterol 14: 156–158.
2. Angelico, F., and the GREPCO Group, 1984a, Factors associated with gallstone disease: Observations in the GREPCO study, in: Epidemiology and Prevention of Gallstone Disease (L. Capocaccia, G. Ricci, F. Angelico, M. Angelico, and A. F. Attili, eds.), MTP Press, Lancaster, pp. 185–192.
3. Angelico, M., and the GREPCO group, 1984b, Relationships between serum lipids and cholelithiasis; observations in the GREPCO study, in: Epidemiology and Prevention of Gallstone Disease (L. Capocaccia, G. Ricci, F. Angelico, M. Angelico, and A. F. Attili, eds.), MTP Press, Lancaster, pp. 77–84.
4. Attili, A. F., and the GREPCO group, 1984, Dietary habits and cholelithiasis, in: Epidemiology and Prevention of Gallstone Disease (L. Capocaccia, G. Ricci, F. Angelico, M. Angelico, and A. F. Attili, eds.), MTP Press, Lancaster, pp. 175–181.
5. Attili, A. F., and the Rome Group for the Epidemiology and Prevention of Cholelithiasis (GREPCO), 1987, Diet and gallstones: Result of an epidemiologic study performed in male civil servants, in: Nutrition in Gastrointestinal Disease (L. Barbara, G. Bianchi Porro, R. Cheli, and M. Lipkin, eds.), Raven Press, New York, pp. 225–231.