Classification of Diabetes Mellitus(WHO 1998) ype l insulin dependent diabetes mellitus, IDDM ype ll non-insulin dependent diabetes mellitus, NIDDM a Others: secondary diabetesClassification of Diabetes Mellitus (WHO 1998) ◼ TypeⅠ: insulin dependent diabetes mellitus，IDDM ◼ TypeⅡ: non-insulin dependent diabetes mellitus，NIDDM ◼ Others： secondary diabetes