I do not understand it.
D000163:Acquired Immunodeficiency Syndrome / Q000635:transmission*; D017742:Dental Care for Chronically Ill / Q000331:legislation & jurisprudence*; D006801:Humans; D009864:Ontario; D011287:Prejudice; D011792:Quebec; D016079:Refusal to Treat / Q000331:legislation & jurisprudence; D016635:Universal Precautions