Analysis 2.3. Comparison 2 Fondaparinux versus placebo sensitivity analysis inserting Yokote 2011, Outcome 3 total DVT......... Analysis 2.4. Comparison 2 Fondaparinux versus placebo sensitivity analysis inserting Yokote 2011, Outcome 4 proximal DVT..... Analysis 2.5. Comparison 2 Fondaparinux versus placebo sensitivity analysis inserting Yokote 2011, Outcome 5 total PE........... Analysis 2.6. Comparison 2 Fondaparinux versus placebo sensitivity analysis inserting Yokote 2011, Outcome 6 fatal PE........... Analysis 2.7. Comparison 2 Fondaparinux versus placebo sensitivity analysis inserting Yokote 2011, Outcome 7 non-fatal PE...... Analysis 2.8. Comparison 2 Fondaparinux versus placebo sensitivity analysis inserting Yokote 2011, Outcome 8 major bleeding.