Bittner, R.
Schwarz, J.
Article History
Received: 6 April 2019
Accepted: 21 April 2019
First Online: 8 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interests.
: All studies reported by the authors were accepted by the Ethical Committee of the Hospital.
: The Human Rights had been respected in all the studies.
: All patients included in the studies had given their Informed Consent.