Received: 17 April 2019
Accepted: 22 December 2019
First Online: 16 January 2020
Ethics approval and consent to participate
: Subjects provided written informed consent prior to participation to the study according to the declaration of Helsinki. Ethical approval was provided by the ethics committee of the health service of Bologna reference CE 14131 23/02/2015, and was conducted in agreement with principles of good clinical practice.
: All participants gave written informed consent.
: Two of the authors are founders of mHealth Technologies s.r.l., the company that manufactures and sells systems that are similar to the one used in this study.