title: Complementary and alternative therapies: can we know what risks they present?
authors.forename: Humphrey
authors.initials: H
authors.lastname: Hodgson
mesh_terms: D001249:Asthma / Q000628:therapy*; D000529:Complementary Therapies / Q000009:adverse effects*; D006801:Humans; D018570:Risk Assessment; D006113:United Kingdom