[A good abstract is worth more than a thousand words].
Sánchez Alvarez
J
J
D000043:Abstracting and Indexing; D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology; D006801:Humans; D010506:Periodicals as Topic; D012307:Risk Factors; D013030:Spain / Q000453:epidemiology; D015819:Substance Abuse, Intravenous / Q000453:epidemiology
Un buen resumen vale más que mil palabras.