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. 2009 Dec;17(6):565–569. doi: 10.1590/S1678-77572009000600005

TABLE 4. Time since the last servicing of the sterilization devices.

n %
One week 11 8.1
Four weeks 8 5.9
Six weeks 13 9.6
Twelve weeks 25 18.5
More than twelve weeks 78 57.8