Struyvenberg, M R; de Groof, A J; Kahn, A; Weusten, B L A M; Fleischer, D E; Ganguly, E K; Konda, V J A; Lightdale, C J; Pleskow, D K; Sethi, A; Smith, M S; Trindade, A J; Wallace, M B; Wolfsen, H C; Tearney, G J; Meijer, S L; Leggett, C L; Bergman, J J G H M; Curvers, W L