Funding for this research was provided by:
Merck Sharp and Dohme (N/A)
Received: 20 February 2020
Accepted: 25 August 2020
First Online: 7 September 2020
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of Dirección General de Salud Pública/Centro Superior de Investigación en Salud Pública. In order to protect personal data, the original datasets were dissociated by the database’s managers. Moreover, consent was waived by the IRB (Ethics Committee of Dirección General de Salud Pública / Centro Superior de Investigación en Salud Pública).
: Not applicable.
: MLL, AOS, CMQ and JDD ever received travel grants to attend meetings sponsored by pharmaceutical companies. MAMB has no conflicts of interests. JDD has been principal investigator in clinical trials sponsored by SPMSD, MSD, GSK and Pfizer. JDD acted as Advisor for GSK and SPMSD.