This year 7,000 people will die of chronic kidney failure. Many could be saved. It's a national tragedy - and largely avoidable. Two medical advances of the 1960s - the kidney machine and kidney transplant - brought new hope. But treatment has become a cruel lottery in which only 600 patients will get the kidney machine they need to live. Even fewer will get a transplant.
Horizon shows for the first time an actual transplant operation, showing the skill of the surgeons who can give life to the lucky few. But why so few?
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