Peter J. Meffert, et al. “Risk Factor Prevalence and Their Relative Influence on Fatty Liver and Gallstone Disease: A Cross-Ethnic Study Comparing Two High-Risk Populations from Chile and Northeast Germany”. Epidemiology, vol. 1, no. 1, Apr. 2016, pp. 40-52, https://openventio.us/index.php/EOJ/article/view/1644.