Jejunoileal BypassHyperlipidemiasWhiplash InjuriesMetabolic Syndrome XChronic DiseaseSyndromeRisk FactorsObesityInsulin ResistancePrevalenceWaist CircumferenceBlood GlucoseBody Mass IndexCross-Sectional StudiesTriglyceridesObesity, AbdominalDown SyndromeCardiovascular DiseasesCholesterol, HDLDyslipidemiasDiabetes Mellitus, Type 2HypertriglyceridemiaBiological MarkersBlood PressureAdiponectinMetabolic DiseasesFatty LiverLipidsProspective Studies