Updates are available Correction dated 2020-02-20

Article History

Received: 15 July 2019

Revised: 25 September 2019

Accepted: 26 September 2019

First Online: 7 November 2019

Change Date: 20 February 2020

Change Type: Correction

Change Details: The original version of this article contained errors in the caption of fig. 3.

Compliance with ethical standards

: The present study is a historical review and thus neither ethics approval nor informed consent were required.

: The authors declare that they have no conflict of interest.