Counting instruments is still the best policy.
D017598:Efficiency, Organizational; D017408:Guidelines as Topic; D006801:Humans; D019300:Medical Errors; D009871:Operating Room Nursing / Q000592:standards*; D016134:Organizational Policy; D013525:Surgical Instruments / Q000592:standards / Q000706:statistics & numerical data*; D013514:Surgical Procedures, Operative / Q000592:standards*; D014481:United States