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. Organ transplantation is the transfer of essential organs from one location to another with in a same individual or from one person to the other for the purpose of replacing patients damaged or absent organs. Many diseases which will not be readily curable by any existing therapies can be cured by this method of organ transplantation. There are different types of transplantations and the most commonly transplanted organs are kidneys, liver and heart. Organ transplantation technique can be mainly divided into two types called allograft and autograft transplantations. Autograft transplantation is a transplantation which involves the transferof organs from one place to other within the same body, whereas allograft transplantation is a transplantation technique which is performed between two different individuals or between two species.
Last date updated on July, 2014