@article{Kassa1999,
author = {Kassa, E. and Rinke de Wit, T.F. and Hailu, E. and Girma, M. and Messele, T. and Mariam, H.G. and Yohannes, S. and Jurriaans, S. and Yeneneh, H. and Coutinho, R. and Fontanet, A.L.},
title= {Evaluation of the World Health Organization staging system for HIV infection and disease in Ethiopia: association between clinical stages and laboratory markers},
year = {1999},
doi = {10.1097/00002030-199902250-00011},
journal = {AIDS},
volume = {13},
number = {3},
pages = {381--389},
}