This paper is devoted to the study of electrical conductivity tantalum-doped zirconia ceramics prepared by spark plasma sintering. In this study, temperature dependence in as-prepared specimens and those previously annealed air determined compared. A semi-empirical model, which based on oxidation states cations, has been developed successfully assessed. According this, basically controlled diff...

I agree with the authors statement, “It is an important alternative especially in patient who did not respond to conventional pentavalent antimony therapy given alone or in combination with other agents”. But they stated their experience with L-AmB treatment without trying conventional treatment. Therefore I am not in agreement with their belief that “this drug may be the first choice of treatm...