Funding for this research was provided by:
Provincia autonoma di Bolzano (116/2016)
Received: 1 February 2019
Accepted: 16 May 2019
First Online: 13 June 2019
Ethics approval and consent to participate
: This study is a retrospective case series description that does not require ethics committee approval. Written, informed consent was obtained prior to their inclusion in this study. The research adhered to the tenets of the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.