M Marchetti, NL Liberato, N Ruperto, and G Barosi. 1999. “Long-Term Cost-Effectiveness of Low Molecular Weight Heparin Versus Unfractionated Heparin for the Prophylaxis of Venous Thromboembolism in Elective Hip Replacement”. Haematologica 84 (8). Pavia, Italy, 730-37. https://doi.org/10.3324/%x.