Associations of plasma fibrinogen levels with established cardiovascular disease risk factors, inflammatory markers, and other characteristics: individual participant meta-analysis of 154,211 adults in 31 prospective studies - Kaptoge, S; White, IR; Thompson, SG; Wood, AM; Lewington, S; Lowe, GD; Danesh, J; Fibrinogen Studies Collaboration (Am J Epidemiol, 2007)