Patients over age 40 should be instructed to routinely test their stool for blood every ____ for detection of cancer of the colon.
A) 5 years
B) 2 years
C) year
D) month
Question 2
Which of the following is an example of an engineering control?
A) Puncture-resistant sharps containers
B) Safety needles for injections and venipuncture
C) Both a and b
D) None of the above