Clinical and subclinical characteristics of brain-dead donors for liver transplantation in Viet Duc University Hospital oleh Thanh Khiem Nguyen, Hong Son Trinh, Gia Anh Pham, Ham Hoi Nguyen, Trung Nghia Bui, Manh Thau Cao, Quang Nghia Nguyen, Viet Khai Ninh, Tuan Hiep Luong, Tien Quyet Nguyen