Venous thromboembolism risk factors and prophylaxis of elderly intensive care unit patients in a Chinese general hospital - Chen, Xiaolan; Huang, Jiali; Liu, Jingxuan; Deng, Hui; Pan, Lei (Annals of Palliative Medicine; Vol 10, No 4 (April 30, 2021): Annals of Palliative Medicine, 2021)