Köckerling, Ferdinand
Botsinis, Marinos Damianos
Rohde, Christine
Reinpold, Wolfgang
Schug-Pass, Christine
Article History
Received: 16 January 2017
Accepted: 24 February 2017
First Online: 10 March 2017
Conflict of interest
: F. Köckerling, M.D. Botsinis, C. Rohde, W. Reinpold, and C. Schug-Pass declare that they have no competing interests.