Men who have sex with men (MSM) have been represented disproportionately in the HIV epidemic in high income countries since the first HIV/AIDS cases were reported in MSM in 1981. Among all vulnerable HIV populations, MSM account for the preponderance of prevalent AIDS cases in Western Europe.
High-impact journals are those considered to be highly influential in their respective fields. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years.
Last date updated on July, 2020