Curreri 1970.

Methods	Retrospectively assembled case series based on the clinical records of all 111 patients admitted to the US Army Institute of Surgical Research between 1950 and 1986
Participants	77 out of a total of 96 patients with phosphorus burns
Interventions	Without copper sulphate: 37 patients: wounds irrigated with copious amounts of water or saline, debridement with removal of phosphorus particles at least once, and application of wet dressing with thick gauze pads, and irrigation with water or dilute solution of sodium bicarbonate With copper sulphate: 40 patients treated as above, plus application of copper sulphate before, during and after debridement
Outcomes	Average length of hospitalisation, the time required for eschar separation and incidence if residual contractures
Notes	USA
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	Not randomised
Allocation concealment (selection bias)	High risk	No allocation concealment