Waal, Yvonne De, Avoort, Gordon Van Der, Blom, Erik, Hakkers, Jarno (2) Brown, Gordon, El-erian, Mohamed, Spence, Michael (2) Gordon, Philip (1) Hewitt, Paul L. (university Of British Columbia, Flett, Gordon L. (york University, Mikail, Samuel F. (private Practice (1) Zopa, Mcdougall, Gordon (1)