cancer-1->breast cancer
cancer-1->lung cancer
cancer-1->heart cancer
cancer-1->stomach cancer
cancer-4->foot cancer
cancer-1->blood cancer
breast cancer-1->foot cancer
breast cancer-1->some cancer
lung cancer-1->foot cancer
lung cancer-2->some cancer
lung cancer-1->blood cancer
heart cancer-1->foot cancer
heart cancer-1->some cancer
stomach cancer-1->foot cancer
stomach cancer-1->some cancer
foot cancer-1->some cancer
blood cancer-1->some cancer