Jejunoileal BypassHyperlipidemiasCholesterolDietCholesterol, DietaryCholesterol, HDLCholesterol, LDLCholesterol EstersCholesterol OxidaseCholesterol 7-alpha-HydroxylaseLipidsTriglyceridesCholesterol, VLDLLipoproteinsHypercholesterolemiaDiet, ReducingDietary FatsAnticholesteremic AgentsSterol O-AcyltransferaseLipoproteins, HDLSterolsHydroxymethylglutaryl CoA ReductasesBile Acids and SaltsApolipoprotein A-ILipid MetabolismDiet, AtherogenicDiet, Fat-RestrictedDiet, High-FatBileSitosterols