Which Parameters of Ultraviolet C (UVC) Light Will Reduce Bacterial

Which parameters of ultraviolet C (UVC) light will reduce bacterial counts in chronic wounds?

A) UVC source perpendicular to and 1 inch from wound, repeated exposures of 10 seconds
B) UVC source perpendicular to and 1 inch from wound, repeated exposures of 180 seconds
C) UVC source 25 degrees from perpendicular to and 1 inch from wound, repeated exposure of 90 seconds
D) UVC source perpendicular to and 3 to 5 inches from wound, repeated exposures of 3 minutes

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