Received: 12 July 2018
Accepted: 12 November 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: This study included the use of a database provided by Morion company to analyze drugs on the pharmaceutical market of Ukraine and the use of the previously published price database of the National Board of Pricing and Compensation in Bulgaria.
: Not applicable.
: The authors declare that they have no competing interests.