Obscured clusters - IV. The most massive stars in [DBS2003] 179 J. Borissova, L. Georgiev, M. M. Hanson, J. R. A. Clarke, R. Kurtev, V. D. Ivanov, F. Penaloza, D. J. Hillier and J. Zsargó A&A, 546 (2012) A110 Published online: 17 October 2012 DOI: 10.1051/0004-6361/201118348