Infection control: it can't hurt and it always helps.
Brown
M
M
D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control; D003140:Communicable Disease Control; D003770:Dental Offices; D004990:Ethics, Dental; D006509:Hepatitis B / Q000517:prevention & control; D006801:Humans; D012575:Schools, Dental