Diabetes Mellitus, LipoatrophicLipodystrophyDiabetes Mellitus, Type 2Diabetes MellitusHIV-Associated Lipodystrophy SyndromeDiabetes Mellitus, Type 1Diabetes ComplicationsInsulinLeptinInsulin ResistanceAdipose TissueDiabetes Mellitus, ExperimentalBlood GlucoseDiabetes, GestationalHypoglycemic AgentsHemoglobin A, GlycosylatedRisk FactorsHyperglycemiaGlucose Tolerance TestDiabetic AngiopathiesDiabetic NephropathiesDiabetic Neuropathies