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. 2020 Jul 11;6(7):e04377. doi: 10.1016/j.heliyon.2020.e04377

Table 1.

Inclusion criteria for selection of subjects.

Control Group DM Group DPN Group DN Group
Diagnosed DM NO YES YES YES
History of polyneuropathy NO NO YES YES
Painful sensations NO NO YES NO
Vibration perception threshold 16V NO NO YES YES

Key: Diabetic without neuropathy (DM); Diabetic painful neuropathy (DNP); Diabetes neuropathy without pain (DN).