Download Article
Download the full article as a PDF file.
Download the full article as a PDF file.
© 2021 M. Pavlova, E. Alexandrova, Y. Kalchev, V. Velev, M. Murdjeva, T. Kantardjiev, published by Sofia Medical University
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.