title: Crack users' cracked lips: an additional HIV risk factor.
authors.forename: J
authors.initials: J
authors.lastname: Porter
authors.forename: L
authors.initials: L
authors.lastname: Bonilla
mesh_terms: D016578:Crack Cocaine; D015658:HIV Infections / Q000635:transmission*; D006801:Humans; D012307:Risk Factors; D012907:Smoking; D019966:Substance-Related Disorders / Q000150:complications*
chemical_list: D016578:Crack Cocaine