Structural analysis of health-relevant policy-making information exchange networks in Canada. by Contandriopoulos, D, Benoît, F, Bryant-Lukosius, D, Carrier, A, Carter, N, Deber, R, Duhoux, A, Greenhalgh, T, Larouche, C, Leclerc, B, Levy, A, Martin-Misener, R, Maximova, K, McGrail, K, Nykiforuk, C, Roos, N, Schwartz, R, Valente, T, Wong, S, Lindquist, E, Pullen, C, Lardeux, A, Perroux, M