Hong Kong will become the first city in Asia to conduct clinical trials of a non-invasive treatment for kidney tumours, with tycoon Li Ka-shing funding places for 30 patients across three private hospitals.The Li Ka Shing Foundation announced on Wednesday that CUHK Medical Centre, Gleneagles Hospital Hong Kong and Hong Kong Sanatorium & Hospital would launch the trials using histotripsy, a technology that uses focused sound waves to break apart tumours without surgical incisions.The trials...