Steinbacher, Gilbert
Alentorn-Geli, Eduard
Alvarado-Calderón, Manuel
Barastegui, David
Álvarez-Díaz, Pedro
Cugat, Ramón
Article History
Received: 7 February 2018
Accepted: 27 July 2018
First Online: 11 August 2018
Compliance with ethical standards
:
: The authors declare that there are no conflicts of interest for the present study.
: This study has been conducted in accordance with the ethical standards at our Institution and with the 1964 Helsinki Declaration and its later amendments.