KALAVSKÝ, Erich et al. Previous exposure to antibiotics including antituberculotic and antifungal agents with and without prophylactic TMP/SMX and resistance in bacteria from HIV positive children: absence of resistance selection pressure of trimetoprim sulfametoxazol : note. In Journal of health management and public health. Surveillance studies in infectious diseases and nursing. ISSN 1335-1885, 2006, vol. 10, no. 4, s. 9-14.