Received: 12 March 2019
Accepted: 16 July 2019
First Online: 25 July 2019
Ethics approval and consent to participate
: The study protocol was approved by the ethics committee of the Istituto G. Gaslini, Genoa, Italy.
: Not applicable.
: AR has received grant support and/or speaking or consultant fees from Alfa sigma, Angelini, AbbVie, Bristol-Myers Squibb, Novartis, Pfizer, Reckitt Benckiser, Roche, and Johnson & Johnson; AC reports personal fees from AbbVie and Alfasigma and non-financial support from Pfizer.