20. The commissioner may authorize any school, health care facility, child care center or youth camp to provide potassium iodide as a supplemental protective action during a radiological emergency to residents, staff members, minors or other persons present in such facility, if:
a. prior written permission has been obtained from each resident or representative of a resident, staff member, or parent or guardian of a minor for providing the potassium iodide; and
b. each person providing permission has been advised, in writing: (1) that the ingestion of potassium iodide is voluntary only, (2) about the contraindications of taking potassium iodide and (3) about the potential side effects of taking potassium iodide.