Premature Ejaculation (PE) is one of the utmost common sexual dysfunctions, affecting 20%-40% of sexually active men. There were many definitions of PE by different professional organizations. However, since the underlying physiopathology of PE was not well agreed, there was no universally recognized definition of PE until the International Society for Sexual Medicine (ISSM) established the first evidence-based definition of lifelong PE in 2007
The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. 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, 2014