Cinderella Ng, 48, who started kidney dialysis 18 years ago, was stunned by the deaths. 'Every kidney patient tries so hard to carry on living. We spend enormous amounts of money to buy time and we endure the pain of the treatment. 'It's just awful that the patients lost their lives because of an accident,' she said. Ms Ng said the tragedy would cast a shadow over her confidence in the treatment. 'But I and other patients have to continue the treatment because we have no other way to stay alive. I never thought something would go wrong with the machine itself.' She spends nearly $900 on each eight-hour session at a subsidised kidney dialysis centre in Aberdeen. Ms Ng, who lost her job as a clerk two years ago, urged the health authorities to organise more seminars on blood dialysis. 'Although I have gone through the same process for 18 years, twice a week always, I don't even know the basic concept behind dialysis,' she said. 'I don't know the difference between various fluids and their usage nor how the man-made kidney operates.' Han Yung-sheng, who was afflicted with kidney disease 20 years ago when he was five, said the incident had prompted people to pay attention to other factors apart from the dangers of infection and complications. 'Blood dialysis is a better alternative for wealthier patients. 'It's really a shame that they died from the treatment, not the disease,' he said. Mr Han had a long-awaited kidney transplant operation last year. Ms Ng is awaiting a donor.