References
- Friedman G D, Kannel W B, Dawber T R. The epidemiology of gallbladder disease: observations in the Framingham study. J Chron Dis 1966; 19: 273–292
- Hanis C L, Ferrell R E, Tulloch B R, Schull W L. Gallbladder disease epidemiology in Mexican Americans in Starr County Texas. Am J Epidemiol 1985; 122: 820–829
- Jørgensen T. Prevalence of gallstones in a Danish population. Am J Epidemiol 1987; 126: 912–921
- Van der Linden W. Some biological traits in female gallstone-disease patients. Acta Chir Scand 1961, suppl 269
- Jørgensen T. Gallstones in a Danish population: familial occurrence and social factors. J Biosoc Sci 1988; 20: 111–120
- Jørgensen T. Gall stones in a Danish population: Fertility period, pregnancies, and exogenous female sex hormones. Gut 1988; 29: 433–439
- Jørgensen T. Gall stones in a Danish population. Relation to weight, physical activity, smoking, coffee consumption, and diabetes mellitus. Gut 1989; 30: 528–534
- Jørgensen T, Jørgensen L M. Gallstones and diet in a Danish population. Scand J Gastroenterol 1989; 24: 821–826
- Barbara L, Sama C, Labate A MM. A population study on the prevalence of gallstone disease: the Sirmione study. Hepatology 1987; 7: 913–917
- The Rome group for epidemiology and prevention of cholelithiasis (GREPCO). The epidemiology of gallstone disease in Rome, Italy. I. Prevalence data in men. Hepatology 1988; 8: 904–906
- The Rome group for epidemiology and prevention of cholelithiasis (GREPCO). The epidemiology of gallstone disease in Rome, Italy. II. Factors associated with the disease. Hepatology 1988; 8: 907–913
- Glambek I, Kvaale G, Arnesjö B, Søreide O. Prevalence of gall stones in a Norwegian population. Scand J Gastroenterol 1987; 22: 1089–1094
- Pixley F, Mann J. Dietary factors in the aetiology of gall stones: a case control study. Gut 1988; 29: 1511–1515
- Janzon L, Aspelin P, Eriksson S. Ultrasonographic screening for gallstone disease in middle-aged women. Scand J Gastroenterol 1985; 20: 706–710
- Mellström D, Asztely M, Svanvik J. Gallstones and previous cholecystectomy in 77- to 78-year-old women in an urban population in Sweden. Scand J Gastroenterol 1988; 23: 1241–1244
- Cooperberg P, Golding R H. Advances in ultrasonography of the gallbladder and biliary tract. Radiol Clin North Am 1982; 20: 611–633
- Breslow N E, Day N E. Statistical methods in cancer research. Vol. 1. The analysis of case-control studies. IARC, Lyon 1980
- Sackett D L. Bias in analytic research. J Chron Dis 1979; 32: 51–63