Figure 4-8 Mistake-Proofing the Design of Health Care Processes - Figure 4.8A. An empty work fixture Figure 4.8B. A fuel filter clamp loaded in a work fixture Source: Photos from Erlandson, et al.10 © 1998 IEEE. Used with permission.Return to Document Current as of May 2007 Internet Citation: Figure 4-8: 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/mistakefig4-8.html