title: Head infestation--a persistent problem.
mesh_terms: D000818:Animals; D006801:Humans; D007306:Insecticides / Q000627:therapeutic use; D010373:Lice Infestations / Q000453:epidemiology* / Q000517:prevention & control / Q000628:therapy; D010374:Pediculus
chemical_list: D007306:Insecticides