Which of the following is not one of the four nationally recognized prehospital emergency care provider levels?

Referral patterns influenced from distressed internal organs describe:

a. Somatovisceral referral b. Viscerosomatic referral c. Spill over pain zone d. Essential pain zone

Which of the following units represents the addition of fluoride in drinking water?

a. milligrams (mg) b. milliliters (ml) c. parts per million (ppm) d. liters (L)