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Article History

Received: 4 June 2019

Accepted: 29 January 2020

First Online: 4 February 2020

Ethics approval and consent to participate

: The present study conforms with the ethical principles of the Declaration of Helsinki. This study did not require approval by any ethics committee as according to the Spanish law (“Ley 14/2007, de 3 de julio, de Investigación biomédica”), research projects carried out on human beings or their biological material have to be approved by a Research Ethics Committee, excluding observational studies where any patient treatment or intervention is modified. Moreover, according to the Spanish law (“Ley 41/2002, de 14 de noviembre, básica reguladora de la autonomía del paciente y de derechos y obligaciones en materia de información y documentación clínica el consentimiento informado”), the informed consent has to be signed only when the activity of the study can affect patient’s health status. Since our study is observational and patient data were obtained using an online anonymous survey, it was not necessary for patients to sign an informed consent in this study.

: Not applicable.

: EM has received honoraria as consultant in advisory boards, and as chairperson or lecturer in meetings, and has also participated in clinical trials and other research projects promoted by Bayer, Biogen-Idec, Merck-Serono, Teva, Novartis, Almirall, Sanofi-Genzyme, Actelion and Roche. OF have received honoraria as consultant in advisory boards, and as chairmen or lecturer in meetings, and has also participated in clinical trials and other research projects promoted by Bayer, Biogen-Idec, Merck-Serono, Teva, Novartis, Allergan, Almirall, Sanofi-Genzyme and Roche. The rest of authors have no conflicting interests.