Hoang Van Phong, Nguyen Ngoc Dung, Nguyen Thi Thu Huyen, Tran Thi Thu Trang, Pham Tuan Viet, Dao Anh Son, “Awareness towards blood donation of presidents at Cat Hai Districts, Hai Phong City, Vietnamin 2019”, Annals of RSCB, vol. 25, no. 6, pp. 20732–20741, Oct. 2021.