Key points are not available for this paper at this time.
Background 35(2):489-494. doi: https://doi.org/10.12669/pjms.35.2.604 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Sançar et al. (Wed,) studied this question.