Received: 21 November 2019
Accepted: 17 January 2020
First Online: 28 February 2020
Ethics approval and consent to participate
: The institutional Committee on Ethics (Comité d'Ethique Hospitalo-Facultaire Universitaire de Liège) approved the present retrospective study protocol registered in the European Clinical Trials Database (EudraCT) under the reference number 2019-002269-36.
: Not applicable
: The authors declare that they have no competing interests.