The MBH − Mstar relation of obscured AGNs at high redshift J. E. Sarria, R. Maiolino, F. La Franca, F. Pozzi, F. Fiore, A. Marconi, C. Vignali and A. Comastri A&A, 522 (2010) L3 Published online: 27 October 2010 DOI: 10.1051/0004-6361/201015696