Evidence for diffuse molecular gas and dust in the hearts of gamma-ray burst host galaxies: Unveiling the nature of high-redshift damped Lyman- α systems

J. Bolmer^*, C. Ledoux, P. Wiseman, A. De Cia, J. Selsing, P. Schady, J. Greiner, S. Savaglio, J. M. Burgess, V. D'Elia, J. P. U. Fynbo, P. Goldoni, D. H. Hartmann, K. E. Heintz, P. Jakobsson, J. Japelj, L. Kaper, N. R. Tanvir, P. M. Vreeswijk, T. Zafar