Figure 8-8 Mistake-Proofing the Design of Health Care Processes - Figure 8.8. A locked portion of this drawer protects against filing mistakesReturn to Document Current as of May 2007 Internet Citation: Figure 8-8: Mistake-Proofing the Design of Health Care Processes -. May 2007. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/professionals/quality-patient-safety/patient-safety-resources/resources/mistakeproof/mistakefig8-8.html