Evaluation of complement system in children in different phases of HIV infection: clinical and laboratorial corelation - Kirschfink, Michael; Lian, Y. C.; Della-Negra, M.; Diogo, Constância L.; Ferriani, V.; Oloiviera, L. C.; Grumach, Anete (Revista brasileira de alergia e imunopatologia, 1999)