Document is current

Article History

Received: 13 July 2019

Accepted: 19 August 2019

First Online: 12 September 2019

Compliance with ethical standards

:

: There are no known conflicts of interest associated with this publication and there has been no significant financial support for this work that could have influenced its outcome.

: This study has been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. All patients included in the study gave their informed consent prior to their inclusion in the study. All details that might disclose the identity of the subjects have been omitted.