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Article History

Received: 20 July 2021

Accepted: 4 April 2022

First Online: 25 April 2022

Declarations

:

: The research was conducted on completely anonymous collected data following the ICC/ESOMAR International Code on Market, Opinion and Social Research and Data Analytics to ensure high standards of ethical behaviour. Investigations involving the use of non-sensitive, anonymous survey and interview procedures are exempt from ethical approval according to Spanish laws.Participants gave their explicit consent to participate in the study following the ESOMAR/WAPOR guideline on opinion polls and published surveys.

: Not applicable.

: The institution of JD-D received research and/or teaching funds from SP, MSD, GSK, Pfizer. JD-D has been principal investigator in trials with influenza vaccine in children sponsored by GSK, SP and Abbot. JD-D received no personal funds from any activity with industry in the last 18 months. ERM has received fees for lectures, scientific consulting, as well as grants to attend conferences from Sanofi Pasteur, Merck Sharp and Dohme and Pfizer. AGM has received travel grants and / or conference fees and / or project sponsorship and / or consultancies from Sanofi Pasteur, MSD, Astra Zeneca, GSK, Seqirus and Pfizer. ROL has received fees for conferences or scientific advice from AstraZeneca, GSK, MSD, Roche, Sanofi and Seqirus. FM-T has received honoraria from GSK group of companies, Pfizer Inc, Sanofi Pasteur, MSD, Seqirus, Biofabri and Janssen for taking part in advisory boards and expert meetings and for acting as a speaker in congresses outside the scope of the submitted work. FM-T has also acted as principal investigator in randomised controlled trials of the above-mentioned companies as well as Ablynx, Gilead, Regeneron, Roche, Abbott, Novavax, and MedImmune, with honoraria paid to his institution. FM-T receives support for research activities from the Instituto de Salud Carlos III (Proyecto de Investigación en Salud, Acción Estratégica en Salud): Fondo de Investigación Sanitaria (FIS; PI070069/PI1000540/PI1601569/PI1901090) del plan nacional de I + D + I and ‘fondos FEDER’. JGO is employee of Sanofi. JRM has no conflicts of interest to declare.