CRISPR technology has revolutionised biological research, and for the first time it’s out of the lab and into the NHS, as NICE has approved its use as cost effective. Kenneth Charles, senior lecturer in haematology at the University of the West Indies explains how the treatment works, and what concerns he has about it's implementation. Also this week, a new investigation on bmj.com has looked at a number of British companies who are offering to collect children's teeth for stem cell extraction and storage. Freelance investigative journalist Emma Wilkinson explains the "outrageous" claims she found them making. Finally - we’re finishing with the football. Team GB had a strong showing this year -  our over 25 men’s team brought the trophy home, and our womans team competed for the first time To explain more about the medical world cup we're joined by Minnan Al-Khafaji, captain of the women’s team, and Jamie Thoroughgood, captain of the men’s team.   Read more. Banking baby teeth: companies may be misleading parents with “outrageous claims” CRISPR therapy for sickle cell disease Follow the British Medical Football Team on instagram