Erratum: Unexpected low frequency of respiratory symptoms in an HIV-positive urban sub-Saharan population compared to an HIV-negative control group

oleh: Maren Kummerow, Erica J. Shaddock, Kerstin Klipstein-Grobusch, Roos B. Barth, Diederick E. Grobbee, W.D. Francois Venter, Charles Feldman, Alinda Vos