1. Department of Pharmacy, Faculty of Medicine, University of Banja Luka, Bulevar vojvode Bojovića 1a, Banja Luka, 78 000, Bosnia and Herzegovina
2. Department of Chemistry, University of Alabama at Birmingham, 901 South 14th Street, Birmingham, Alabama 35294, United States
3. Protiro, Inc., 325 Broadway, Boulder, Colorado 80305-3337, United States