Cancers remain one of the world’s greatest disease burdens and cause of death. In 2008, 12.7 million new cancer cases and 7.6 million cancer related deaths were recorded (Globocan, 2008; WHO, 2013). Cancers related deaths accounted for 13% of all recorded deaths. Among all the cancers, lung cancer is the most common cause of cancer deaths, followed by stomach cancer and liver cancer. Worldwide,...