Text and Data Mining valid from 2019-11-22
Received: 6 September 2019
Accepted: 11 November 2019
First Online: 22 November 2019
Compliance with ethical standards
: Llompart-Pou JA, Pérez-Bárcena J, and Raurich JM declare no conflict of interest. García de Lorenzo A declares having received speaking honoraria from Fresenius Kabi.