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