Figure 8-28 Mistake-Proofing the Design of Health Care Processes - Figure 8.28. Standard metal specula cannot be attached to this loop electrosurgical excision procedure (LEEP) machineSource: Example courtesy of Washoe County District Health Department. Used by permission.Return to Document Current as of May 2007 Internet Citation: Figure 8-28: 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/mistakefig8-28.html