Journal Impact Factors The impact factor for a journal is calculated based on a three-year period, and can be considered to be the average number of times published papers are cited up to two years after publication. For example, the impact factor 2012 for a journal would be calculated as follows: A = the number of times articles published in 2010-2011 were cited in indexed journals during 2012 B = the number of articles, reviews, proceedings or notes published in 2010-2011 impact factor 2012 = A/B
PubMed http://www.ncbi.nlm.nih.gov/pubmed// Web of science http://apps.webofknowledge.com/WOS_Gene ralSearch_input.do?product=WOS&search_m ode=GeneralSearch&SID=T28E3jmBc2kn3e o8h6J&preferencesSavedhttp://apps.webofknowledge.com/WOS_Gene ralSearch_input.do?product=WOS&search_m ode=GeneralSearch&SID=T28E3jmBc2kn3e o8h6J&preferencesSaved= Elin http://www.med.lu.se/bibliotek_och_ikt
Results found:166 Sum of the Times Cited [?] :4578 Sum of Times Cited without self-citations [?] : 4378 Citing Articles[?] :3643 Citing Articles without self-citations [?] :3572 Average Citations per Item [?] :27.58 h-index [?] :38 A scientist has index h if h of his/her N p papers have at least h citations each, and the other (N p − h) papers have no more than h citations each.
Open Acess Journal http://www.biomedcentral.com/ www.plos.org
Paper Title Abstract Introduction Materials and Methods Result Discussion References