Human rights organisations have called for international bodies to open an investigation into the deaths of 10 child cancer patients in an area of Yemen controlled by the Houthi rebels after they were given expired medicine. The Houthi-run health ministry said Friday that at least 10 children being treated for leukaemia in the rebel-held capital Sanaa died after medicine with “bacterial contaminations” had been administered to them. The medication had passed its expiry date, a medical source in Sanaa told AFP, asking not to be identified for security reasons. In a jointstatement, rights groups…