canadian pharmacy cialis Alexander, SP; Kelly, E; Marrion, N; Peters, JA; Benson, HE; Faccenda, E; Pawson, AJ; Sharman, JL; Southan, C; Buneman, OP; Catterall, WA; Cidlowski, JA; Davenport, AP; Fabbro, D; Fan, G; McGrath, JC; Spedding, M; Davies, JA; CGTP Collaborators,