Effects of the harvesting technique and external stenting on progression of vein graft disease 2 years after coronary artery bypass by Sandner, SE, Donovan, TJ, Edelstein, S, Puskas, JD, Angleitner, P, Krasopoulos, G, Channon, K, Gehrig, T, Rajakaruna, C, Ladyshenskij, L, De Silva, R, Bonaros, N, Bolotin, G, Jacobs, S, Thielmann, M, Choi, Y-H, Ohri, S, Lipey, A, Friedrich, I, Taggart, DP