The ISRCTN registry: "necrotizing fasciitis" or "necrotising fasciitis" or" necrotizing soft tissue infection" or "necrotising soft tissue infection"

ClinicalTrials.gov: "necrotizing fasciitis" or "necrotising fasciitis" or" necrotizing soft tissue infection" or "necrotising soft tissue infection"

The Australian New Zealand Clinical Trials Registry (ANZCTR): "necrotizing fasciitis" or "necrotising fasciitis" or" necrotizing soft tissue infection" or "necrotising soft tissue infection"

WHO International Clinical Trials Registry Platform (ICTRP): "necrotizing fasciitis" or "necrotising fasciitis" or" necrotizing soft tissue infection" or "necrotising soft tissue infection"

EU Clinical Trials Register: "necrotizing fasciitis" or "necrotising fasciitis" or" necrotizing soft tissue infection" or "necrotising soft tissue infection"

Pharmaceuticals databases: "necrotizing fasciitis" or "necrotising fasciitis" or" necrotizing soft tissue infection" or "necrotising soft tissue infection"