ABSTRACT
Cancer is a leading cause of death worldwide, and the number of global cancer deaths is projected to increase 45% from 2007 to 2030 (from 7.9 million to 11.5 million deaths). In some less developed continents, such as South America and Asia, already more than half of all cancer cases occur.1 According to the World Health Organization (WHO), early detection of cancer greatly increases the chances for successful treatment.2 So the early screening and accurate diagnosis have been considered as one of the most important treatments against cancers.
