Article History
Received: 15 August 2018
Accepted: 4 December 2018
First Online: 11 December 2018
Compliance with ethical standards
:
: Carolin Sabine Harms declares that she has no conflict of interest.Edgar Schäfer declares that he has no conflict of interest.Till Dammaschke declares that he has no conflict of interest.
: All treatments were conducted strictly in full accordance with ethical principles, including the World Medical Association Declaration of Helsinki (version 2008).
: The treatments were undertaken with the understanding and written consent of each patient and according to ethical principles, including the Declaration of Helsinki.