Received: 10 January 2018
Accepted: 11 May 2018
First Online: 15 June 2018
Ethics approval and consent to participate
: Written informed consent was obtained from the patient for publication of this review and any accompanying images. Acopy of the written consent is available for review by the Editor-in-Chief of this journal.
: RM has received educational grants from the industry to conduct studies and to present lectures. The other authors declare that they have no competing interests.