Practice of Chiropractic Medicine; Revising the definition of the term “practice of chiropractic medicine”; authorizing chiropractic physicians to possess, prescribe, and administer vitamins, nutrient preparations, homeopathic remedies, dietary supplements, and prescription epinephrine, by specified means; requiring chiropractic physicians to be certified by the Board of Chiropractic Medicine to administer by injection vitamins, nutrient preparations, homeopathic remedies, dietary supplements, and epinephrine, etc.