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Table 1 Groups investigated

From: Systemic inflammatory mediators in post-traumatic Complex Regional Pain Syndrome (CRPS I) - longitudinal investigations and differences to control groups

Acute CRPS I (AC) Chronic CRPS I (CC) Neuralgia (NE) Fracture (FR) Healthy controls (C)
clinical criteria of IASP clinical criteria of IASP injury of peripheral nerves with persisting pain hand-/distal forearm fractures  
acute stage; < 6 months > 6 and < 12 months   5-6 weeks after injury