Funding for this research was provided by:
Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii (37PFE/06.11.2018)
Received: 22 July 2020
Accepted: 21 October 2020
First Online: 31 October 2020
Ethics approval and consent to participate
: Not applicable.
: The manuscript has been read and approved by all named authors and that there are no other persons who satisfied the criteria for authorship but are not listed.
: The authors declare no competing interest. The founding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results.