1. Ambrosius D, Kaluza K, Gross S (1999) Microbial cholesterol dehydrogenase, process for its production and use. US Patent 5,856,156
2. Artaud-Wild SM, Connor SL, Sexton G, Connor WE (1993) Differences in coronary mortality can be explained by different cholesterol and saturated fat intakes in 40 countries but not in France and Finland. Circulation 88:2771–2779
3. Beitz D (1995) Administration of cholesterol reductase to humans. US Patent 5,436,004
4. Beitz D, Young J, Dehal Sh (1990) Method of converting cholesterol in food to coprostanol. US Patent 4,921,710
5. Beitz D, Young J, Li L, Buhman K (1999) Oral administration of coprostanol producing microorganisms to humans to decrease plasma cholesterol concentration. US Patent 5,972,685