Methods: The receivers were divided into diabetes mellitus with no peripheral neuropathy group (DM group) (n = 42), DPN group (n = 46) and healthy control group (N group)( n = 40).

• 方法:受试者分为3组:糖尿病无神经病变(DM组)42人,糖尿病神经病变(DPN)组46人,正常对照组(N组)40人。