Figure 8-39 Mistake-Proofing the Design of Health Care Processes - Figure 8.39. The variation in these clocks by different manufacturers is insignificantSource: Example courtesy of John Reiling and St. Joseph's Hospital. Used with permission.Return to Document Current as of September 2012 Internet Citation: Figure 8-39: Mistake-Proofing the Design of Health Care Processes -. September 2012. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/professionals/quality-patient-safety/patient-safety-resources/resources/mistakeproof/mistakefig8-39.html