The selected rabbits comprised a nonprobability sample of convenience. The animals were grouped by using simple randomization with the help of a free research randomizer program (http://www.randomizer.org/form.htm), by using three blocks containing 10 numbers each. Each block corresponded to the drug used, and the numbers generated corresponded to the animals. Thus, each animal was assigned a letter and a number corresponding to the group and animal identification (e.g., C1=animal 1, cilostazol group; A2=animal 2, A. sativum group). This identification was written with indelible blue ink on the inside face of the base of the right ear of the animals.