Maria Caballer-Tarazona1, David Vivas-Consuelo2. 1. Applied Economics Department, Universitat de València, Valencia, Spain. Maria.caballer@uv.es. 2. Research Centre for Health Economics and Management, Universitat Politècnica de València, Valencia, Spain.
Unfortunately, the original version of this article [1] contained an error. The author list was included incorrectly. Antonio Clemente-Collado was included as one of the authors by mistake. This author has now been removed from the author list as there was a conflict of interest. There will also be an update to correct this.