|Acupuncture, which involves inserting needles at various places on the body to stimulate so-called acupoints, is among the most widely practiced forms of alternative medicine in the country and is offered by many hospitals. Most commonly the treatment is sought by adults looking for relief from chronic pain, though it is also used with growing frequency in children. According to government estimates, about 150,000 children in the United States underwent acupuncture in 2007.
But for all its popularity, questions about its efficacy have long been commonplace. High-impact journals are those considered to be highly influential in their respective fields. 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.