|Hematology and Oncology though are separate fields can be studied combindly. The division of Oncology and hematology is interested in the diagnosis of all the cancers (malignancies) that occur in humans. The divisions of hematology and oncology physicians specialize in various types of cancers which include leukemia, breast, lung, lymphomas, pancreatic, gastric, brain cancer, melanoma, hepatocellular and solid tumors along with treatment of patients with blood disorders such as anemia, clotting problems and bleeding disorders. There are many treatments available which may include chemotherapy, immunotherapy along with radio immunoconjugates and vaccines. 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.