参考文献（第7章）

“考虑偶然因素”的参考文献：

1 Antithrombotic Trialists’ (ATT) Collaboration. Aspirin in the primary and secondary prevention of vascular disease: collaborative meta-analysis of individual participant data from randomised trials. Lancet 2009;373:1849-60.

2 CRASH trial collaborators. Final results of MRC CRASH, a randomised placebo-controlled trial of intravenous corticosteroid in adults with head injury – outcomes at 6 months. Lancet 2005;365:1957-9.

3 CRASH-2 trial collaborators. Effects of tranexamic acid on death, vascular occlusive events, and blood transfusion in trauma patients with significant haemorrhage (CRASH-2): a randomised, placebo-controlled trial. Lancet 2010;376:23-32.

4 Askie LM, Brocklehurst P, Darlow BA, et al and the NeOProM Collaborative Group. NeOProM: Neonatal Oxygenation Prospective Metaanalysis Collaboration study protocol. BMC Pediatrics 2011; 11:6.