Fig. 1From: Intermittent versus continuous esketamine infusions for long-term pain modulation in complex regional pain syndrome: protocol of a randomized controlled non-inferiority study (KetCRPS-2)Detailed flowchart of the KetCRPS-2 studyAbbreviations: Complex Regional Pain Syndrome (CRPS), Numerical Rating Scale (NRS), Global Perceived Effect (GPE), the Core Outcome Measurement set for complex regional PAin syndrome Clinical sTudies (COMPACT)Back to article page