If you belong to the blood group O, you can help many Vietnamese patients by donating blood at the National Institute of Haematology and Blood Transfusion on Phạm Văn Bạch Street, Cầu Giấy district, Hà Nội, from 8am to 10pm or by visiting your nearest blood donation centre. For details, visit www.nihbt.org.vn/Home/DiemHM or contact (024) 38686008/ (024) 37821900.