Many people believe in miracles, they remain hopeful even when they supper a serious illness. They did not need any scientific explanation or proof.
Just like my cousin when she was diagnosed with a stage 3 cancer and the doctor told us that maybe she can live only a few months. She suffered so much pain. But she never lost hope. She always pray and asked God for miracles that she will be cured.
And yes, she is still alive right now for more than fifteen years since that incident happen.
Maybe the prayer and the faith in God can give us miracle.