Human giardiasis in Serbia: asymptomatic vs symptomatic infection A. Nikolić, I. Klun, B. Bobić, V. Ivović, M. Vujanić, T. Živković and O. Djurković-Djaković Parasite, 18 2 (2011) 197-201 Published online: 15 May 2011 DOI: 10.1051/parasite/2011182197