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Competing interest
LM is an expert consultant for Amgen Inc., AstraZeneca Pharmaceuticals, Lilly, Ipsen, Mayoly Spindler, MSD, Novo Nordisk, Pfizer, Sanofi, Sanofi Pasteur MSD and Servier. DD is a consultant for Abbvie, BMS, Novartis, Novo Nordisk, Pfizer and Sanofi. FD participates in working groups and attends conferences at the request of Pfizer, GSK and Sanofi Pasteur MSD. DS participated in vaccination workshop organized by Pfizer in 2013 and 2015. BA, KB, FF and BT were paid consultants to SMFG at the time of the research. PA, GC, JLG and FR declare that they have no competing interest.