Younger sister Tania has been suffering from cancer for the past 1 year. Cancer has spread to different parts of the body due to the decrease in Tania disease prevention. According to the doctor's advice, the desire to give at least 7 chemotherapy to heal Tania. But the cost of treatment of poor Tania can not be borne to his family. At the end of the effort, you have requested for help. Considering the humanitarian side, extend your cooperation with your ability. Just think, 20, 50, 100, 500 dollars is too small for you, but it will play a big role in saving a helpless sister's life.