This week at Liverpool's Alder Hey children's hospital, a boy is treated after losing the tip of his finger in a door, while one-day-old Faith has just a 50 per cent chance of survival after being born with a hole in her diaphragm. She needs emergency surgery as her intestines place pressure on her heart and lungs. Also ten-year-old Stephen, who has brittle bone disease, has his seventh operation on his club foot.