IM Wichers, M Di Nisio, HR Buller, and S Middeldorp. 2005. “Treatment of Superficial Vein Thrombosis to Prevent Deep Vein Thrombosis and Pulmonary Embolism: A Systematic Review”. Haematologica 90 (5). Pavia, Italy, 672-77. https://doi.org/10.3324/%x.