Popov, Lucia-Doina https://orcid.org/0000-0002-0754-9966
Article History
Received: 12 April 2019
Accepted: 10 May 2019
First Online: 27 May 2019
Compliance with ethical statements
: This mini review is a retrospective study on the recently published papers related to the subject. My review did not require execution of novel research involving human participants and/or animals. In this situation, formal consent is not necessary.
: The authors declare that they have no conflict of interest.