A comparative risk assessment of burden of disease and injury attributable to 67 risk factors and risk factor clusters in 21 regions, 1990-2010: a systematic analysis for the Globa... by Lim, S, Vos, T, Flaxman, A, Danaei, G, Shibuya, K, Adair-Rohani, H, Amann, M, Anderson, H, Andrews, K, Aryee, M, Atkinson, C, Bacchus, L, Bahalim, A, Balakrishnan, K, Balmes, J, Barker-Collo, S, Baxter, A, Bell, M, Blore, J, Blyth, F, Bonner, C, Borges, G, Bourne, R, Boussinesq, M, Brauer, M