• http://www.cdc.gov/hicpac/pdf/guidelines/Disinfection_Nov_2008.pdf
• http://www.disinfectionandsterilization.org
• Anaphylaxis following cystoscopy with equipment sterilized with Cidex OPA (ortho-phthalaldehyde): a review of two cases.     http:// www.ncbi.nlm.nih.gov/pubmed/18811577