title: Prophylaxis against deep-vein thrombosis.
mesh_terms: D003362:Cost-Benefit Analysis; D006801:Humans; D009985:Orthopedics / Q000379:methods*; D011655:Pulmonary Embolism / Q000517:prevention & control*; D012107:Research Design; D013924:Thrombophlebitis / Q000517:prevention & control*